What Produces Most Of The Oxygen In The Air That We Need To Stay Alive ?

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What Produces Most Of The Oxygen In The Air That We Need To Stay Alive ?

Question:
What Produces Most Of The Oxygen In The Air That We Need To Stay Alive ?
a)
Sunlight
b)
Solar Wind
c)
Algae
d)
Trees

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Correct Answer
Algae
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