Question

where does oxygen come from..i know but this is for my little cousin of mine and he needs help but he dont want my help he wants yall help so can yall please help

Answer 1

It comes from earth in general its the atmosphere on the Earth

Answer 2

Hey there

the answer is

Oxygen does not all come from trees as people think

According to National Geographic, about 70% of the oxygen in the atmosphere comes from marine plants and plant-like organisms.

It is the most abundant element found on the Earth and makes up 21% of the atmosphere.

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OFFICIALLYSAVAGE2003