1) What is an ecosystem? a) A system where living and non-living things interact in a specific environment. b) A place where animals live together 2) Which one is a biotic factor? a) tree b) rock 3) Which is an abiotic factor? a) bird b) sunlight 4) What do producers do? a) Make their own food b) Eat other animals 5) What is a food chain? a) A group of animals in a zoo b) A flow of energy from one organism to another 6) What is a decomposer? a) An animal that eats meat b) An organism that breaks down dead matter 7) Which is a freshwater ecosystem? a) river b) ocean 8) What does a consumer eat? a) only plants b) other organisms 9) What is biodiversity? a) One type of animal living in an area b) A variety of living things in one place 10) How can humans harm ecosystems? a) polluting rivers b) planting trees

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