Which statements are true? Usable nitrogen becomes available to organisms in the soil.
Decomposers are important to the carbon cycle
Producers do not play a role in the water cycle/
Both 'A' and 'B' are true

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.  

unless you remeber everything you always have to have data when recording anything.