1) Which of the following correctly illustrates an ecosystem? a) b) c) 2) A _____________ is all populations in the same place at the same time (all living things). a) population b) community c) biosphere 3) Which of the following best describes an ecosystem? a) It is a group of organisms belonging to the same species.  b) It is a group of organisms belonging to different species. c) It consists of the living organisms and the physical environment with which they interact. 4) Which of the following are examples of BIOTIC Factors in the ecosystem? a) plants, animals, water b) air, water, sunlight c) plants, humans, animals 5) Which of the following are examples of ABIOTIC Factors in the ecosystem? a) plants, animals, water b) air, water, sunlight c) plants, humans, animals

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