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Author Question: The oxygen revolution changed Earth's environment dramatically. Which of the fol (Read 643 times)

penguins

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on: Jul 12, 2013
The oxygen revolution changed Earth's environment dramatically. Which of the following took advantage of the presence of free oxygen in the oceans and atmosphere?
A) the evolution of cellular respiration, which used oxygen to help harvest energy from organic molecules
B) the persistence of some animal groups in anaerobic habitats
C) the evolution of photosynthetic pigments that protected early algae from the corrosive effects of oxygen
D) the evolution of chloroplasts after early protists incorporated photosynthetic cyanobacteria
E) the evolution of multicellular eukaryotic colonies from communities of prokaryotes


Millan

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Reply #1 on: Jul 13, 2013
Answer:  A


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penguins

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Reply #2 on: Jul 18, 2013
Thank you, thank you!!


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