Negative feedback mechanisms are common among plants and animals while positive feedback mechanisms are very rare. Why are negative feedback mechanisms so much more prevalent?
A) Positive feedback mechanisms have a higher energy cost.
B)Negative feedback mechanisms provide energy for cell growth.
C)Positive feedback mechanisms evolved much later than negative feedback mechanisms.
D)Only negative feedback mechanisms lead to homeostasis, important for life.

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error? the object is an asteroid, not a dwarf planet.the object is a moon, not a dwarf planet.the object is not a dwarf planet because it travels with other objects.the object is not a dwarf planet because it is round.