Scientists from Temple University used radioactively “tagged” carbon dioxide to determine that spotted salamander embryos   Multiple Choice   benefit from carbohydrates produced by the green algae living in the jelly layer of the eggs.   are consuming the carbon dioxide produced by the green algae living in the jelly layer of the eggs.   are producing oxygen for the green algae living in the jelly layer of the eggs.   receive no benefit from having green algae living in the jelly layer of the eggs.   are consuming the oxygen released by the green algae living in the jelly layer of the eggs.

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