Final answer:
An autotroph is an organism that can create its own food using energy from the sun or inorganic substances through photosynthesis.
Step-by-step explanation:
An autotroph is an organism that has the ability to create its own food using energy from the sun (or from inorganic substances) through a process called photosynthesis. They convert sunlight, water, and carbon dioxide into glucose, which can be used as a source of energy. Examples of autotrophs include plants, algae, and some bacteria.
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