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Transcript

nothings seems to happen

you need to wash your hands !!

well done :D

well done :D

well done :D

well done :D

well done :D

Well Done ! Now you're are the perfects students and the the citizens of tomorrow ! preserve our ecosystem and limited the differents forms of the pollution.

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Find the organs on the human.

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Find the organs on the human.

Click on the button again to delete the previous question

Find the organs on the human.

Click on the button again to delete the previous question

Find the organs on the human.

Click on the button again to delete the previous question

Find the organs on the human.

Click on the button again to delete the previous question

Find the organs on the human.

Click on the button again to delete the previous question

Find the organs on the human.

Click on the button again to delete the previous question

Find the organs on the human.

Click on the button again to delete the previous question

Causes of ground pollution

Causes of ground pollution

Causes of ground pollution

Causes of ground pollution

Causes of ground pollution

What causes air pollution?