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Contamination
(Sent by Hilda Alvarez, a student from Cotija, Mexico)

I'm Hilda and I'm going to talk about the contamination.

The pollution in our planet has always been effective existed, since we have not known learned to respect it and we have damaged it in all the possible ways.

It's true that before there was not as much pollution since the factories didn't exist, and the use of cars, aerosols and all this type of products have arisen at present time.

When I was a child, I didn't become aware of what  contaminates the atmosphere, but now I invite you all to see consider that to take care of the atmosphere is something vital to conserve our existence and the other beings, in good conditions of health and harmony.

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