What causes acid rain? A Chlorofluorocarbons react with water in the atmosphere to form acids. B Pesticides and fertilizers react with water in the atmosphere to form acids. C Steam from nuclear power plants reacts with water in the atmosphere to form acids. D Gases from burning fossil fuels react with water in the atmosphere to form acids.

Which pattern most likely came from a gunshot and which one was produced from a blow on the head? explain your answer?

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 terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these