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humans and all other organisms, can only live in oxygenated enviroments.

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

Which is one example of a phenotypic change that is not genetic

What is the difference between a scientific hypotheses and a scientific theory?