Oxygen

Oxygen For Plants - Can Plants Live Without Oxygen
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Yes, it is. Plants need oxygen to survive, and plant cells are constantly using oxygen. Under certain circumstances, plant cells need to take in more ...
10 things we get from trees
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Some of them are oxygen, fruits, vegetables, flowers, nectars, wood, medicines, paper, rubber, cotton, spices, fibre, perfume, manure, cosmetics etc....