These notes were taken during a class about biological evolution, but the subject title is missing. -results from immigration -new genes brought into a population -variation in a population increases what do the notes describe? gene flow natural selection genetic drift mutation

Gene Flow

Explanation:

Gene flow is the evolutionary force wherein new genes are introduced into the gene pool of the local population when some individuals from another population move in. These individuals add new genes in the gene pool of the existing population by interbreeding with its individuals. Addition of new genes into the gene pool of the population increases the genetic variations.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .