Biology, 31.08.2019 04:00 valdezangie10
Cyanobacteria were the first photosynthetic organisms. how were they responsible for allowing higher life forms to evolve? a. they released oxygen, which mixed to form iron, and later ferrous oxide, in the air. b. they released carbon dioxide, which evolving animals needed. or c. they released oxygen, which created the ozone layer, resulting in reduced mutation rate.
Answers: 2
Biology, 22.06.2019 07:00
Which of the following will a bacterium produce when a human gene is added to its genome? question 4 options: human carbohydrates a protein made up of both human and bacterial properties the human protein coded for by the human gene human plasmids that can be isolated from the bacterium
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Biology, 22.06.2019 12:30
Are the layers of rock above and below the coal older or younger?
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How do disease caused by bacteria and disease caused by viruses react to antibiotics
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Cyanobacteria were the first photosynthetic organisms. how were they responsible for allowing higher...
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