Which statement describes all primary producers? a. all harness the energy of sunlight through the process of photosynthesis. b. all take in energy to assemble energy-rich compounds. c. all are small, single-celled organisms, such as bacteria and algae. d. all take in food and break it apart to release energy.

The correct answer is option B. All take in energy to assemble energy-rich compounds.

Explanation:

One characteristic that distinguish primary producers from other organisms is that  all take in energy to assemble energy-rich compounds. Primary producers role in the ecosystem is to produce organic compounds from abiotic sources that they use as energy. These abiotic sources include the sunlight ( in the case of phototroph and photoautotroph), and carbon dioxide (chemolithotrophs).

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and after water is usually warmed by the sun the water temperature raises and then evaporates .