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The oxygen revolution changed Earth’s environment dramatically. Which of the following adaptations took advantage of the presence of free oxygen in the oceans and atmosphere?Select one of the options below as your answer: A. The evolution of cellular respiration, which used oxygen to help harvest energy from organic molecules. B. The evolution of chloroplasts. C. The persistence of some animal groups in anaerobic habitats.

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Take a guess...
uhm no?
Lol. Gotta take risks in life sometimes. Can't just let other people make decisions for you.

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Other answers:

Ohk well seeming how this site is here for help so i post the question....
Here to help, not give answers. Can't help if you're not willing to meet halfway.
Oh well my what i think it might be is answer B but im not for sure
jk i think its A not B
Lol. You can only have one answers, and I will help you out by saying that you are correct with one of the answers you said. So which do you think, A or B?
lol thanxx

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