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Tiki the Penguin's guide for kids which explains why so much life on Earth is in trouble
Tiki the Penguin's guide for kids which explains why so much life on Earth is in trouble
I'm a dodo, now extinct because of humans

Changing the air

Part of the 'food' of all plants and cyanobacteria is a gas that is poisonous to us animals called carbon dioxide. They slurp this up, along with water and sunlight, to make sugars by a very clever process called photosynthesis. And in doing this, they make what to them is a waste gas called oxygen. I'll bet you know that no animal can live without it. So you see how important these little plants were then and still are today.

Public domain image via FlickrGreen leaves using the sun to make sugars to give the plant energy.
https://www.flickr.com/photos/29750062@N06/This photo shows strings of cyanobacteria. They are very tiny and used to be called blue-green algae when scientists thought they were just another type of plant.

Try my Life on Earth Quiz to see how you're doing.

 

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