Which Statement Best Describes the Interaction of Energy and Materials,or

Multiple Choice

Which statement best describes the interaction of energy and materials,or process of ecosystem function,within an ecosystem?

A) Both energy and materials cycle through biotic,but not abiotic,components.
B) Energy cycles through biotic components;materials cycle through abiotic components.
C) Energy and materials both travel throughout ecosystems,but they follow separate,disconnected routes.
D) Energy and materials enter biotic components through primary producers;energy flows one way and materials cycle.
E) Materials travel through ecosystems in one direction and are constantly replenished;energy cycles and is used over and over.