Question

If trees give oxygen.How Human take from Trees?

Answer 1

human inhale the oxygen released by the tree in the air

Answer 2

The air is a mixture of many gases including nitrogen and carbon-di-oxide and some dust.Human's nostrils help to get the air into the body by trapping the dust into the nostrils.On the other hand,the gases (nitrogen and carbon-di-oxide) are released back to the air and the oxygen is consumed by us.


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