2. Which of the following is TRUE about finding the streak of a mineral? a. Minerals should be rubbed on any surface to find the streak. b. The color of the mineral and the streak are the same. The mineral should be rubbed on a streak plate to find the true color of the mineral d. The mineral that has luster has no streak.

which

answer denitrification;

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.