5 I curricular geography exercise 1 page 92.0:01
The world's amazing oceans.0:19
There are five oceans.0:33
The Pacific, the Atlantic, the Indian, the Southern, and the Arctic oceans.0:34
They cover an amazing 71% of the Earth's surface and make up 97% of its water supply.0:40
So they're very important for our survival.0:50
We've only explored 10% of the oceans so far.0:54
Scientists have recorded more than 230,000 species of living creatures and plants.0:59
And that's just underwater, above the waves.1:06
There are also thousands of species of seabirds and sea mammals that live around and feed from the oceans.1:11
Our oceans are full of amazing beauty, from colorful coral reefs to majestic whales.1:21
The oceans help to control wind patterns and rainfall, too.1:29
And ocean currents move heat around the world.1:34
They also take carbon dioxide CO2 out of the air.1:39
Unfortunately, pollution from factories is poisoning fish in our oceans.1:45
Rubbish such as plastic bags and soda cans also kills 100,000 sea creatures every year.1:52
And because of overfishing, there are fewer fish every day to help save our precious oceans.2:01
Don't buy seafood that is endangered, like bluefin tuna.2:10
Also, recycle your plastic bottles and cans so they don't end up in the sea.2:16
Over 3 billion years ago, life on Earth began in the oceans.2:23
Let's protect them together.2:30
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