Final answer:
Many ecosystems get their energy in the form of sunlight through the process of photosynthesis.
Step-by-step explanation:
The correct answer is c sunlight. Many ecosystems get their energy from the sun through the process of photosynthesis. In photosynthesis, autotrophs, such as plants, algae, and some bacteria, use sunlight to convert carbon dioxide and water into glucose and oxygen. This glucose serves as the energy source for all other organisms in the ecosystem through the food chain.
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