Compare and contrast producers and consumers

Producers are organisms that can produce their own energy without consuming other organisms. For example,  plants. Consumers are organisms that get their energy from consuming other consumers, and other animals. For example, lions get their energy from eating other animals.

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.