Due Monday, May 7. The composite of two functions can be described several ways. I think of it as the output of the first function acts as the input of the second function.
Plants require carbon dioxide as an input.
Plants give off oxygen as an output. The first function is the plant and the second function is the animal. The animal is dependent on the plant for its input. If, for example, there is no O 2 output from plants then animals will die. The number of fish caught in Bellingham Bay depends upon the number of young fish that entered the bay the previous spring.