1) Identify 4 stimuli that causes a decrease in the number of producers, consumers, and decomposers living in an area. 2) What could be the effects in relationship to the energy pyramid, population and community of organisms within the environment.

b. the carbon cycle ensures living things have a source of hydrogen

answerglucose;

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.