Please choose the correct answer to the question: A group of students plans to build a model of a local pond habitat. Which model best represents an environment similar to a pond?

Answer1: a sealed plastic bottle containing insects and algae from a pond Answer2: a classroom aquarium containing plants and animals bought from a store Answer3: a classroom aquarium containing freshwater, non-native plants, and non-native animals Answer4: a small plastic outdoor pool containing freshwater, native plants, and native animals

Answer format: answer1/answer2/answer3/answer4