Which statement best describes the relationship between a dependent variable and an independent variable in a scientific investigation? a. the independent variable changes in response to changes in the dependent variable. b. the dependent variable changes in response to changes in the independent variable. c. the dependent variable and the independent variable each change separately due to controls. d. both the independent variable and the dependent variable are controlled by the experimenter.

What prevents odyssey from killing the sleeping cyclops

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.