The most common tree in that continent is one that's named "floss silk". It's classified as a tropical tree so we could say that most of South America is covered in tropical trees.
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Answer: Omnivore
Explanation: A Carnivore eats meat, an Herbivore eats plants, and an Omnivore eats both
DNA stands for Deoxyribonucleic Acid, so it's an acid