Hippos: The Life Force of African Rivers

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dung – n. solid waste from an animal

ecosystem – n. everything that exists in a particular environment

tropical – adj. of, relating to, occurring in, or used in the tropics

vast – adj. very great in size or amount

poop – n. another word for dung

defecate – v. to pass solid waste from the body

nutrient –n. a substance that plants, animals and people need to live and grow

habitat – n. the place or type of place where a plant or animal naturally or normally lives or grows