AP BIOLOGY

Detailed explanation-1: -In every ecosystem, organisms are linked through feeding relationships. There are a great many feeding relationships in any ecosystem, but energy always flows from primary producers to various consumers. These feeding relationships are represented by food chains and food webs.

Detailed explanation-2: -Food webs describe the relationships-links or connections-among species in an ecosystem, but the relationships vary in their importance to energy flow and dynamics of species populations. Some trophic relationships are more important than others in dictating how energy flows through ecosystems.

Detailed explanation-3: -Food chains and food webs represent the feeding relationships in ecosystems. They show who eats whom. Therefore, they model the flow of energy and materials through ecosystems.

Detailed explanation-4: -Food webs show how all the food chains in an ecosystem interact.

Detailed explanation-5: -group of organisms linked in order of the food they eat, from producers to consumers, and from prey, predators, scavengers, and decomposers. all related food chains in an ecosystem. Also called a food cycle.