Store energy, provide metabolic fuel and help in digestion
Answer:
X represents ATP (Adenosine TrisPhosphate) or simply put Energy.
The trout because the trout affect the population of the frogs so their for if you lower the population of the trout it would raise the population of the frogs and visversa. <span />
Answer:
genrally it includes the population ,community, ecosystem,and biosphere .An ecosystem is all the living things in an area interacting with all of the abiotic parts of environment