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Which of the following statements is a correct distinction between autotrophs and heterotrophs?
1. Only heterotrophs have mitochondria.
2. Autotrophs, but not heterotrophs, can nourish themselves beginning with and other nutrients that are inorganic.
3. Only heterotrophs require oxygen.
4. Only heterotrophs require chemical compounds from the environment.
5. Cellular respiration is unique to heterotrophs.

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Answer:

Autotrophs, but not heterotrophs, can nourish themselves beginning with and other nutrients that are inorganic.

Explanation:

Unlike heterotrophs, autotrophs such as green plants, are able to synthesize their food (in form of sugar molecules) starting with inorganic molecules like atmospheric carbon dioxide, water in the presence of sunlight.

This is commonly known as photosynthesis. The equation is shown below

6CO2 + 6H2O --> C6H12O6 + 6O2 + Energy

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