A group of students plans to build a model of a local pond habitat. Which model best represents an environment similar to a pond. Choose your answer from: (1). a sealed plastic bottle containing insects and algae from a pond. (2). a classroom aquarium containing plants and animals bought from a store. (3). a classroom aquarium containing freshwater, non-native plants, and non-native animals. (4). a small plastic outdoor pool containing freshwater, native plants, and native animals.
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