Autotrophs use photosynthesis, A.
Autotrophs are organisms that make their own food. Humans and animals do not make their own food. Instead, they get their food by eating other organisms. Organisms like plants can make their own food using photosynthesis, which would make them autotrophs.
Most autotrophs make food through the process of photosynthesis, which uses sunlight, carbon dioxide, and water to produce glucose and oxygen. Plants, algae, and some bacteria are examples of organisms that perform photosynthesis. This process is crucial for energy production and maintaining life on Earth.
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