Photosynthesis likely began_______ billion years ago when the first ____________ appeared. (A) 4.5; autotrophs (B) 3.2; autotrophs
Question:
Photosynthesis likely began_______ billion years ago when the first ____________ appeared.
(A) 4.5; autotrophs
(B) 3.2; autotrophs
(C) 3.5; heterotrophs
(D) 3.2; heterotrophs
It is difficult to determine exactly how life began. Answer the following questions as if the following data had been collected billions of years ago.
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B The sign that photosynthesis began was when oxygen appeared ...View the full answer
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Related Book For 
The Princeton Review AP Biology Premium Prep 2023
ISBN: 9780593450659
2023 Edition
Authors: The Princeton Review
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