Energy can be __ in an ecosystem, such as plant's chemical energy being stored in leaves that are then eaten by a rabbit in order to generate heat or run away from a predator. As the energy moves from the plant to the rabbit to the predator, its __ decreases.

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.