Why do we take up birds?

Birds Life is sensitive because they depend on each places' environment. For example, birds move places to secure secure some foods because they want to survive.

For this reason, We can regard birds life as the borometer of the gloval environment.

What is Ecosystem?

What do you think about ecosystem?

Ecosystem is one of the most importance things to know the environment.

Not only human but also almost creatures have to eat something to live must eat something to live. That is to say,some creatures eat anothers and others are eaten by anothers.

We say that "Food Chain".

Photosynthesis

Plants make oxign from carbon dioxide. This function call "Photosynthesis".

Its chemical formula is this.

If we lost all over the world plants, wa can't alive. Because we can't alive withont oxgin.

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