Amountain lion population recently experienced a drop in population size. which of the following would best describe the limiting factor that is involved?

B.The deer population experienced a rapid decline due to a parasite.

this is more of a statement than a question. is there answers to go along with this, or is it opinion based?

the species living around the vents are especially good at dispersal.  

deep-sea vent originates on the floor of the ocean when seawater circulates through hot volcanic rocks, usually situated where the new oceanic crust is being produced.  

biological dispersal refers to the movement of species from their location of birth to their site of breeding, or from breeding site to another. similarly, the oceanic dispersal refers to the movement of the species from one land mass to another by sea crossing.