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信息发布者：

 penguin

 climate

 around

return

 store

 therefore

ton

 include

 included

included

including

hold

 held

held

act

 action

harmful

harmless

harm

sadly

sad

 the natural world

 lie between... and...

 coral reefs

look like rocks

 keep water in their leaves

 the earth's main ecosystems

 slow down

 have a role to play

 keep the balance

 make the water clean

help prevent floods

 take in

help clean the air

 climate change

 act like the “kidneys” of the earth

 call forests the “lungs” of the earth

The climate in deserts

is so awful that only a few animals

and plants can live there.

This goes on and on, so the

ocean is just like the “heart” of the earth.

It holds plenty of salt water, and the

water rises to the sky, falls onto the

land and then returns to the ocean.

Forests make up nearly a third of the

earth's land area.