First, you should know what Autotrophs and Heterotrophs are.
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Autotroph - A type of lifeform that is able to make it's own food, a good example of this are plants from which they make their own food using photosynthesis
Heterotrophs - A type of lifeform that gets its food from other living things (animals or plants) Just like a panda eat leaves and bamboo
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Answer: Pandas are Heterotrophic