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Dennis_Churaev [7]
3 years ago
6

The evolution of organisms that use oxygen in their respiration was possible only because of the action of a group of bacteria t

hat produced oxygen and changed the earth's atmosphere from an anoxic one to one rich in oxygen. that group of bacteria was:
Biology
1 answer:
iren2701 [21]3 years ago
8 0
Photosynthetic bacteria changed the Earth's atmosphere
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Y_Kistochka [10]
A woodcutter could justify cutting trees for use say in a pioneering situation whereby the pioneer needs shelter and food so trees could be necessary to say construct a small log cabin and table for eating/preparing food at to ensure the survival of the pioneer. 
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The general term for small photosynthetic organisms found near the surface of the coean is
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ASHA 777 [7]

Answer:

Autotrophs

Explanation:

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3 years ago
All changes in matter involve chemical <br> reactions true or false
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3 0
3 years ago
Read 2 more answers
The options are <br> A.) deletion <br> B.) nondisjunction <br> C.) inversion <br> D.) insertion
Snezhnost [94]

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I think the insertion is  represented

Explanation:

hope this helps if not let me know have a blessed day

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2 years ago
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