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Презентация на тему по природоведения на тему Вырубка лесов

People use paper every day. But we often deal with it carelessly. We throw it around, do not save it and do not use it in a proper way and it become wastes.
Deforestation is a global problem of modern world. People use paper every day. But we often deal with it Every year about 20000000 m2 trees are cut down in Russia. For These trees are the source of oxygen. It's necessary for all people and animals’ breath. Our future is in a our hands. Thanks for attention.By Gerasina Ekaterina 7A
Слайды презентации

Слайд 2 People use paper every day. But we

People use paper every day. But we often deal with

often deal with it carelessly. We throw it around,

do not save it and do not use it in a proper way and it become wastes.

Слайд 3 Every year about 20000000 m2 trees are cut

Every year about 20000000 m2 trees are cut down in Russia.

down in Russia. For make 50-70 sheets of such

paper need 1 trees.

Слайд 4 These trees are the source of oxygen. It's

These trees are the source of oxygen. It's necessary for all people and animals’ breath.

necessary for all people and animals’ breath.


Слайд 5

People!  Economize paper and save forests.

People! Economize paper

and save forests.

Слайд 6 Our future is in a our

Our future is in a our hands.

hands.


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