Texte de Prof.Maurice Hakizimana posté sur son page facebook
1.C’est avant tout une histoire de conventions
Il faut savoir que les océans et les mers sont définis par des conventions décidées par l’homme, et non réellement sur des critères objectifs. Par exemple, le nom “océan” n’est devenu officiel qu’à la fin du XIXe siècle, après que Magellan ait navigué sur l’océan Pacifique et le nomma ainsi par temps calme.À noter que le mot “mer” vient du latin, mare et maris. Le terme “océan”, lui, a pour origine le mot mot grec Ôkeanos, une divinité marine qui symbolisait l’eau qui entoure le «disque» de la Terre.
Donc, selon les conventions, un océan est désigné par une grande étendue d’eau salée bordée par des continents.
On compte 5 océans sur la planète :
Pacifique,
Atlantique,
Indien,
Arctique,
Austral.
2.C’est aussi une question de taille.
L’océan est plus grand !
Pour vous donner un ordre d’idée, le plus petit océan, l’Arctique, fait 14,09 millions de km². Alors que la mer la plus grande, la mer d’Arabie, s’étend sur 3,6 millions de km².
3.Les mers sont bordières ou annexes
Parmi les mers, les océanographes en distinguent deux types différents:
D’abord, les mers bordières, disposées le long du contour des océans et fermées par des péninsules, des îles ou des hauts-fonds.
Les mers annexes, elles, communiquent avec l’océan uniquement par un détroit et sont entourées par des terres émergées.
C’est le cas de la Méditerranée et le détroit de Gibraltar.
Il existe trois mers qui sont totalement fermées :
la mer Caspienne, la mer d’Aral et la mer Morte.
Sans oublier que certaines font carrément partie des océans, comme la mer Jaune dans l’océan Pacifique.
4.Des mers sont plus salées que les océans
Autre critère à prendre en compte, les mers sont beaucoup plus salées que l’océan à cause d’une plus forte évaporation.
À titre d’exemple, la salinité de l’océan tourne en moyenne autour de 35 grammes/litre. En mer Rouge, cela monte à 41 g/l. C’est 275 g/l pour la mer Morte !
Exception qui confirme la règle, pour la mer Baltique, c’est entre 5 et 10 g/l, qui est alimentée par de nombreux fleuves.
5.Profondeur et diversité biologique
Est prise en compte également la profondeur. Par exemple, la mer de Norvège peut atteindre les 4 000 mètres. Encore mieux, la mer de Corail, située entre l’Australie et la Nouvelle Calédonie a son point maximum à 9 140 m. À côté, la Manche ou la mer du Nord font office de flaque d’eau avec leurs 200 mètres de profondeur…
Quant à l’océan, près de la moitié de ses eaux dépasse 3 000 m de profondeur. La fosse des Mariannes, avec ses 11 020 m de profondeur, est le point le plus profond.
Les océans sont plus grands mais c’est dans les mers que l’on trouve la plus grande diversité biologique. La mer Méditerranée abrite ainsi entre 4 et 18 % des espèces marines de la planète alors qu’elle représente moins de 1 % de la surface de l’océan mondial. Petite mais costaude !
source: https://business.facebook.com/Hakizimana-Maurice-2220484434682831/?xts[0]=68..
Hi there, this weekend is good in support of me, for the reason that this occasion i am reading this impressive educational article here at my
residence.
Hi, Neat post. There’s an issue with your website in web explorer, might check this?
IE still is the market leader and a good portion of people will pass over your fantastic writing due to this problem.
Hello! I’m at work browsing your blog from my
new iphone 3gs! Just wanted to say I love reading through your blog and look forward
to all your posts! Carry on the great work!
Amazing blog! Is your theme custom made or did you download it from
somewhere? A theme like yours with a few simple tweeks would really make my blog jump out.
Please let me know where you got your design. Appreciate it
What’s up Dear, are you genuinely visiting this web site
daily, if so after that you will absolutely obtain pleasant experience.
Heya i am for the first time here. I came across this board
and I find It really useful & it helped me out much. I hope
to give something back and aid others like you helped me.
Thank you for the good writeup. It in fact was a amusement account
it. Look advanced to far added agreeable from you! By the way,
how could we communicate?
Hi to all, it’s really a good for me to pay a visit this web site, it includes
important Information.
My partner and I stumbled over here coming from a
different website and thought I might as well check things out.
I like what I see so i am just following you. Look forward to
looking over your web page yet again.
Unquestionably consider that that you stated.
Your favourite reason appeared to be at the internet the simplest
factor to consider of. I say to you, I certainly get annoyed while other people consider issues that they plainly do not understand about.
You controlled to hit the nail upon the highest and also defined out the entire thing without having side effect ,
other folks can take a signal. Will probably be back to get more.
Thanks
I think the admin of this web site is in fact working hard for his website, because here every information is quality based
material.
It is in reality a nice and useful piece of info.
I’m satisfied that you just shared this useful information with us.
Please stay us up to date like this. Thanks for
sharing.
I just couldn’t leave your website prior to suggesting
that I extremely loved the standard information an individual
supply on your visitors? Is gonna be back incessantly in order
to inspect new posts
It’s really a great and helpful piece of info. I’m glad that you shared this useful information with us. Please stay us up to date like this. Thanks for sharing.
You are my aspiration, I own few blogs and infrequently run out from to brand : (.
Keep working ,splendid job!
As I website possessor I believe the content matter here is rattling excellent , appreciate it for your efforts. You should keep it up forever! Best of luck.
Woah! I’m really enjoying the template/theme of this website.
It’s simple, yet effective. A lot of times it’s difficult to get that “perfect balance” between superb usability and visual appearance.
I must say you’ve done a awesome job with this. Also, the blog loads extremely
fast for me on Opera. Exceptional Blog!
Does your website have a contact page? I’m having trouble locating
it but, I’d like to shoot you an email. I’ve got some ideas for your blog you
might be interested in hearing. Either way, great site and I look forward to seeing it develop over time.
Wow! Thank you! I continually wanted to write on my blog something like that. Can I implement a portion of your post to my blog?
I think this is one of the most important info for me. And i am glad reading your article. But wanna remark on some general things, The website style is ideal, the articles is really excellent : D. Good job, cheers
I truly appreciate your work, Great post.
Spot on with this write-up, I really feel this website needs much more attention. I’ll probably
be returning to read through more, thanks for the advice!
They launched for sports betting in New Jeraey in September and will launch in Pennsylvania sometime in 2019.
my page; 안전놀이터
Kangwon Casino is aan on-line establishment with the permit to
accept neighborhood punters.
Stop by my website; 카지노
Several sportsbooks have supplied signup bonuses as advertised
onn social media and television.
Here is my page :: 안전놀이터 (Gilda)
Veriify out The Internship Show podcast interview with Haley McCown.
Feel free to visit my web page :: 퀸알바
Aesthetic Nurse Practitioners are Sophisticaqted Practice Registered Nurses who specialize in cosmetic healthcare procedures that enhance thueir patients’ appearance.
Here is my webpage: 유흥알바
Everygame accepts Visa, Mastercard, Discover, and American Express.
Here is my website … 바카라 (Ashley)
Some really great info , Gladiolus I observed this.
Actually when someone doesn’t understand after that its up to other visitors that they will help, so here it takes place.
Feel free to visit my webpage tracfone 2022
You completed a number of nice points there. I did a search on the issue and found a good number of folks will agree with your blog.
I do not even know how I ended up here, but I thought this post was good. I don’t know who you are but definitely you are going to a famous blogger if you aren’t already 😉 Cheers!
You are my inspiration , I possess few blogs and very sporadically run out from to post .
There is noticeably a bundle to know about this. I assume you made certain nice points in features also.
Good write-up, I’m regular visitor of one’s website, maintain up the nice operate, and It’s going to be a regular visitor for a long time.
Great beat ! I wish to apprentice while you amend your web site, how can i subscribe for a blog site? The account aided me a acceptable deal. I had been a little bit acquainted of this your broadcast provided bright clear concept
You made some clear points there. I looked on the internet for the topic and found most people will agree with your blog.
My brother suggested I might like this website. He was entirely right. This post truly made my day. You cann’t imagine just how much time I had spent for this info! Thanks!
I am impressed with this internet site, really I am a big fan .
It’s actually a great and useful piece of information. I am glad that you just shared this useful info with us. Please stay us informed like this. Thank you for sharing.
Very interesting subject, regards for posting.
After all, what a great site and informative posts, I will upload inbound link – bookmark this web site? Regards, Reader.
An impressive share, I just given this onto a colleague who was doing a little analysis on this. And he in fact bought me breakfast because I found it for him.. smile. So let me reword that: Thnx for the treat! But yeah Thnkx for spending the time to discuss this, I feel strongly about it and love reading more on this topic. If possible, as you become expertise, would you mind updating your blog with more details? It is highly helpful for me. Big thumb up for this blog post!
Just wanna say that this is very beneficial, Thanks for taking your time to write this.
Unquestionably believe that which you stated. Your favorite justification appeared to be on the net the simplest thing to be aware of. I say to you, I certainly get annoyed while people consider worries that they just do not know about. You managed to hit the nail upon the top and also defined out the whole thing without having side-effects , people could take a signal. Will likely be back to get more. Thanks
I wonder how so much effort you place to make one “오피스북”of these fantastic info web site.
thank you i love it.
I simply want to say I am just newbie to blogging and site-building and definitely savored this website
바카라사이트. Very likely I’m planning to bookmark your site .
I am no longer positive where you’re getting your information, however great topic. I needs to spend some time studying more or understanding more. Thanks for magnificent info I used to be on the lookout for this information for my mission.
Great article!!! After reading your article,“강남오피”
I found it very informative and useful. thank you for posting such a nice content… Keep posting such a good content…
You actually make it appear really easy together with your presentation but I to find this topic to be really something that I think I might never understand. It seems too complicated and very extensive for me. I’m taking a look ahead in your next publish, I’ll try to get the dangle of it!
Nice read, I just passed this onto a friend who was doing some research on that. And he actually bought me lunch because I found it for him smile Thus let me rephrase that: Thanks for lunch! “We know what happens to people who stay in the middle of the road. They get run over.” by Ambrose Gwinett Bierce.
What’s Happening i’m new to this, I stumbled upon this I have found It absolutely helpful and it has helped me out loads. I hope to give a contribution & aid other customers like its aided me. Good job.
It’s really a cool and useful piece of info. I am glad that you just shared this helpful information with us. Please stay us up to date like this. Thanks for sharing.
I haven?¦t checked in here for a while because I thought it was getting boring, but the last several posts are good quality so I guess I will add you back to my everyday bloglist. You deserve it my friend 🙂
Spot on with this write-up, I absolutely feel this website needs far more
“오피스북”
attention. Iíll probably be returning to see more, thanks for the advice!
I enjoy you because of your entire hard work on this blog. Kim really likes setting aside time for investigations and it’s easy to understand why. My partner and i hear all about the dynamic form you render efficient information by means of your web site and in addition welcome participation from some other people on this situation plus our daughter is without a doubt learning a lot of things. Take pleasure in the rest of the new year. You are performing a powerful job.
Does your site have a contact page? I’m having trouble locating it but, I’d like to send you an email. I’ve got some suggestions for your blog you might be interested in hearing. Either way, great site and I look forward to seeing it expand over time.
Hello there, I found your web site via Google while searching for a related topic, your site came up, it looks great. I have bookmarked it in my google bookmarks.
I think you have observed some very interesting details, thanks for the post.
I went over this site and I believe you have a lot of superb info , saved to favorites (:.
Hiya, I am really glad I’ve found this information. Today bloggers publish only about gossips and net and this is really irritating. A good web site with interesting content, this is what I need. Thanks for keeping this web-site, I will be visiting it. Do you do newsletters? Can’t find it.
smooth jazz
Aw, this was a really nice post. In concept I wish to put in writing like this moreover – taking time and actual effort to make an excellent article… but what can I say… I procrastinate alot and in no way appear to get something done.
Very good written article. It will be valuable to anyone who usess it, including yours truly :). Keep doing what you are doing – for sure i will check out more posts.
Would you be focused on exchanging hyperlinks?
Excellent read, I just passed this onto a friend who was doing some research on that. And he actually bought me lunch since I found it for him smile Thus let me rephrase that: Thank you for lunch!
Enjoyed examining this, very good stuff, regards. “While thou livest keep a good tongue in thy head.” by William Shakespeare.
Enjoyed reading through this, very good stuff, thanks.
I genuinely enjoy looking at on this site, it holds good posts. “Beware lest in your anxiety to avoid war you obtain a master.” by Demosthenes.
Lottery Defeater Software is a digital tool designed to assist individuals in improving their chances of winning in various lotteries.
Tonic Greens, a natural health supplement, is designed to enhance immune function.
Java Burn: What is it? Java Burn is marketed as a natural weight loss product that can increase the speed and efficiency of a person’s natural metabolism, thereby supporting their weight loss efforts
Java Burn: What is it? Java Burn is marketed as a natural weight loss product that can increase the speed and efficiency of a person’s natural metabolism, thereby supporting their weight loss efforts
What Is Potent Stream? Potent Stream is a male health formula that helps to maintain healthy urinary and prostate health by killing off all the toxins in the body
Hello there! Do you know if they make any plugins to protect against hackers? I’m kinda paranoid about losing everything I’ve worked hard on. Any recommendations?
I have to express appreciation to you for rescuing me from this setting. Right after scouting throughout the world-wide-web and coming across concepts which are not productive, I was thinking my life was over. Existing without the approaches to the difficulties you have fixed by means of your entire report is a critical case, as well as those that might have badly affected my entire career if I hadn’t discovered your site. Your actual talents and kindness in maneuvering all the things was tremendous. I’m not sure what I would have done if I had not come upon such a point like this. I can now look ahead to my future. Thanks so much for this skilled and results-oriented guide. I will not hesitate to suggest your web sites to any person who desires guidance on this problem.
Greetings from Florida! I’m bored at work so I decided to browse your blog on my iphone during lunch break. I love the knowledge you provide here and can’t wait to take a look when I get home. I’m surprised at how fast your blog loaded on my phone .. I’m not even using WIFI, just 3G .. Anyhow, excellent blog!
Thanks for some other informative website. The place else may I get that kind of info written in such an ideal way? I’ve a mission that I’m simply now running on, and I have been at the look out for such info.
At this time it looks like Drupal is the preferred blogging platform available right now. (from what I’ve read) Is that what you’re using on your blog?
Wow, awesome blog layout! How long have you been blogging for? you made blogging look easy. The overall look of your site is magnificent, as well as the content!
Tonic Greens: An Overview. Introducing Tonic Greens, an innovative immune support supplement
Hello, I think your website might be having browser compatibility issues. When I look at your blog site in Firefox, it looks fine but when opening in Internet Explorer, it has some overlapping. I just wanted to give you a quick heads up! Other then that, excellent blog!
Can I just say what a relief to find someone who actually knows what theyre talking about on the internet. You definitely know how to bring an issue to light and make it important. More people need to read this and understand this side of the story. I cant believe youre not more popular because you definitely have the gift.
I will right away seize your rss feed as I can not in finding your e-mail subscription hyperlink or e-newsletter service. Do you’ve any? Please let me recognise in order that I may just subscribe. Thanks.
What Is Sugar Defender Supplement? Sugar Defender is a plant-based supplement and it helps to regulate the blood sugar levels in the body.
What is ProNerve 6? ProNerve 6 is a doctor-formulated nutritional supplement specifically marketed to individuals struggling with nerve pain.
Aw, this was a really nice post. In thought I would like to put in writing like this additionally – taking time and actual effort to make a very good article… however what can I say… I procrastinate alot and on no account seem to get something done.
What Is Sumatra Slim Belly Tonic? Sumatra Slim Belly Tonic is a weight loss supplement that targets the root cause of weight gain issues.
What Is FitSpresso? FitSpresso is a natural weight loss supplement that alters the biological cycle of the body to burn more calories and attain a slim and healthy body
Well I sincerely liked reading it. This post provided by you is very practical for proper planning.
I am writing to make you be aware of what a exceptional experience my friend’s princess enjoyed using your web page. She mastered numerous things, not to mention what it is like to have an excellent teaching character to have the mediocre ones quite simply fully understand selected impossible matters. You really exceeded our own expectations. Thanks for imparting those great, healthy, revealing and also cool thoughts on that topic to Ethel.
Oh my goodness! an amazing article dude. Thanks Nevertheless I am experiencing subject with ur rss . Don’t know why Unable to subscribe to it. Is there anyone getting identical rss problem? Anyone who knows kindly respond. Thnkx
At this time it appears like WordPress is the best blogging platform out there right now. (from what I’ve read) Is that what you are using on your blog?
You really make it appear really easy together with your presentation but I to find this topic to be actually one thing which I think I would by no means understand. It seems too complicated and very wide for me. I am taking a look ahead to your subsequent publish, I¦ll attempt to get the dangle of it!
Hello! I just would like to give a huge thumbs up for the great info you have here on this post. I will be coming back to your blog for more soon.
Some truly nice stuff on this internet site, I enjoy it.
I do agree with all the ideas you’ve presented in your post. They’re very convincing and will definitely work. Still, the posts are too short for starters. Could you please extend them a bit from next time? Thanks for the post.
F*ckin’ amazing things here. I am very glad to look your post. Thank you a lot and i’m having a look forward to contact you. Will you kindly drop me a e-mail?
Only wanna comment on few general things, The website layout is perfect, the written content is real wonderful. “Drop the question what tomorrow may bring, and count as profit every day that fate allows you.” by Horace.
What is CogniCare Pro? CogniCare Pro is 100 natural and safe to take a cognitive support supplement that helps boost your memory power. This supplement works greatly for anyone of any age and without side effects
What Is LeanBiome?LeanBiome is a natural weight loss supplement that reverses bacterial imbalance in your gut microbiome with the help of nine science-backed lean bacteria species with Greenselect Phytosome, a caffeine-free green tea extract crafted with patented
You have brought up a very wonderful points, appreciate it for the post.
Do you mind if I quote a couple of your posts as long as I provide credit and sources back to your webpage? My blog is in the exact same area of interest as yours and my visitors would genuinely benefit from some of the information you present here. Please let me know if this ok with you. Thanks!
You made some decent points there. I looked on the internet for the issue and found most people will agree with your blog.
Spot on with this write-up, I actually suppose this web site needs way more consideration. I’ll most likely be again to learn way more, thanks for that info.
You really make it appear really easy along with your presentation but I find this matter to be really one thing which I believe I would by no means understand. It kind of feels too complicated and very wide for me. I’m looking forward in your next put up, I?¦ll try to get the hang of it!
With the whole thing that seems to be building within this specific subject material, all your perspectives are generally very exciting. Having said that, I am sorry, because I do not subscribe to your entire theory, all be it refreshing none the less. It appears to everybody that your opinions are generally not totally justified and in simple fact you are generally yourself not really wholly convinced of the point. In any case I did appreciate examining it.
I went over this internet site and I think you have a lot of excellent info , saved to bookmarks (:.
Glad to be one of the visitors on this amazing internet site : D.
ProNerve 6 nerve relief formula stands out due to its advanced formula combining natural ingredients that have been specifically put together for the exceptional health advantages it offers.
Thank you for sharing superb informations. Your web site is so cool. I am impressed by the details that you¦ve on this website. It reveals how nicely you understand this subject. Bookmarked this website page, will come back for extra articles. You, my pal, ROCK! I found just the info I already searched all over the place and simply couldn’t come across. What a perfect web site.
I got what you mean , thanks for posting.Woh I am thankful to find this website through google. “Wisdom doesn’t necessarily come with age. Sometimes age just shows up by itself.” by Woodrow Wilson.
Very good blog! Do you have any hints for aspiring writers? I’m hoping to start my own blog soon but I’m a little lost on everything. Would you propose starting with a free platform like WordPress or go for a paid option? There are so many choices out there that I’m totally overwhelmed .. Any suggestions? Thanks!
Ready to dominate? Join the game and prove your mettle! Hawkplay
of course like your web site but you need to check the spelling on several of your posts. Several of them are rife with spelling issues and I find it very troublesome to tell the truth nevertheless I will definitely come back again.
Hi , I do believe this is an excellent blog. I stumbled upon it on Yahoo , i will come back once again. Money and freedom is the best way to change, may you be rich and help other people.
When I initially commented I clicked the “Notify me when new comments are added” checkbox and now each time a comment is added I get three emails with the same comment. Is there any way you can remove me from that service? Cheers!
It’s arduous to seek out educated individuals on this topic, but you sound like you already know what you’re talking about! Thanks
Hi, Neat post. There is a problem with your web site in internet explorer, would test this… IE still is the market leader and a huge portion of people will miss your wonderful writing because of this problem.
Yay google is my queen assisted me to find this outstanding site! .
Great – I should certainly pronounce, impressed with your web site. I had no trouble navigating through all the tabs as well as related info ended up being truly easy to do to access. I recently found what I hoped for before you know it at all. Quite unusual. Is likely to appreciate it for those who add forums or anything, web site theme . a tones way for your customer to communicate. Excellent task..
Sight Care review
Fit spresso review
Cellucare reviews
Lottery defeater system review
Sightcare review
Fitspresso reviews
Sight Care reviews
Nano defense
Fitspresso
Fitspresso
Lottery defeater is a tool that uses algorithms or specific strategies to predict lottery numbers, aiming to give users an edge in picking winning numbers. The software usually claims to analyze patterns in previous lottery draws to help users select numbers that are more likely to come up in future draws.
Cellucare reviews
Cellucare reviews
You have observed very interesting points! ps decent site.
Lottery defeater system reviews
Fitspresso is a brand-new natural weight loss aid designed to work on the root cause of excess and unexplained weight gain. The supplement uses an advanced blend of vitamins, minerals, and antioxidants to support healthy weight loss by targeting the fat cells’ circadian rhythm.
Fitspresso is a brand-new natural weight loss aid designed to work on the root cause of excess and unexplained weight gain. The supplement uses an advanced blend of vitamins, minerals, and antioxidants to support healthy weight loss by targeting the fat cells’ circadian rhythm.
Lottery defeater software reviews
Lottery defeater review
Opini pix é golpe
Opinipix paga
Weight loss juice
Cellucare reviews
Fitspresso reviews
Fitspresso reviews
Fitspresso reviews
Fitspresso review
Dentavim
Fitspresso reviews
Fitspresso review
Fitspresso
Fitspresso
priligy alternative The dramatic increase seen in the fourth patient may be due to individual differences, to the TNBC phenotype of the tumor or to tumor progression
Fitspresso
Fitspresso review
Fitspresso review
Fitspresso
Fitspresso review
Weight loss juice
Zencortex
Lottery defeater software reviews
Neotonics review
Sightcare
Sight Care
Dentavim review
Dentavim is a dietary supplement formulated to support oral health and improve dental hygiene. With increasing awareness of the importance of maintaining good oral health, Dentavim has emerged as a popular choice for individuals seeking to enhance their dental care regimen. This article provides a detailed overview of Dentavim, including its ingredients, benefits, potential side effects, and overall effectiveness.
Lottery defeater system reviews
Sight Care
Pineal XT review
Neotonics review
Fitspresso reviews
Kerassentials review
Fitspresso review
Good dayI was truly impressed by your post, which contained incredible content and valuable insights. It has sparked a deep interest in me to delve further into this topic, as it aligns with my passion for learning. Your expertise and unique perspective are greatly appreciated. Thank you for generously sharing your thoughts and taking the time to do so!
Hi thereWhile exploring a new website, we came across a webpage that immediately caught our eye. We are incredibly impressed with what we have seen so far and eagerly look forward to your future updates. We are excited to further explore your website and uncover all the amazing features it has to offer.
During our exploration of a new website, we came across a webpage that immediately caught our attention. We are extremely impressed with what we have seen so far and eagerly look forward to your upcoming updates. We are thrilled to continue exploring your website and uncovering all the amazing features it has to offer.See you later, alligator.
Fast, fun, and free to play – jump in Lodibet
TONIC GREENS REVIEW