Life in its earliest stages was very simple, and bacteria were the dominant life form.However, things changed about 2.3 billion years ago that allowed many new life forms to evolve and multicellularity to emerge.These changes were due to the rise in _______ levels in the atmosphere.
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Q220: What is an example of anabolic interconversion?
A)
Q221: The figure below illustrates one type of
Q222: Cyanide inhibits the enzyme in the mitochondrial
Q223: The end products of glycolysis are
A) pyruvate,
Q224: Reagents, such as dinitrophenol, increase the permeability
Q226: The conversion of malate to oxaloacetate in
Q227: Refer to the figure below. 
Q228: Which statement about the citric acid cycle
Q229: Which reaction is not an oxidation-reduction
Q230: Refer to the table below.
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