The environment is composed of a variety of organisms. Animals are the most complex living organisms. They are eukaryotes as they contain a well-defined nucleus enclosed in a nuclear membrane. They depend on other organisms to obtain nutrients. They feed on plants and other organisms and get nutrients from them. There are many types of animals, such as reptiles, amphibians, and insects.

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Chapter 18, Problem 9RAT

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The environment is composed of a variety of organisms. Animals are the most complex living organisms. They are eukaryotes as they contain a well-defined nucleus enclosed in a nuclear membrane. They depend on other organisms to obtain nutrients. They feed on plants and other organisms and get nutrients from them. There are many types of animals, such as reptiles, amphibians, and insects.

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