Answer:
Rose's classmate Mina observing Daphnia in water at 30°C, 32°C, and 34°C.
Through reproduction. dark fur is a dominant trait and eventually if offspring of the one dark furred mouse reproduce enough, it will eventually spread to the whole population because it is a dominant gene and will overpower recessive genes of the other parent organism that the dominant mouse is reproducing with.
That would be the synthesis of body mass in a primary consumer (herbivore who eats the plant).