Question

Which population of organisms would begin the flow of energy through a desert food web?

Answer 1

The cactus because it is a producer and all producers start food chains.

Answer 2

Every population on the earth of different species needs a particular ecosystem and environment to survive and expand their species.

According to the question;

Population of cactus like plants which grows in the hot and dry weather of deserts,begins the flow of energy in the desert food web.Because plants are the only producer of energy in every food web.