Green Plumbing

Answer: D - All of the prior responses are real impacts of the warming caused by the greenhouse effect. When species have to migrate more northward or to higher elevations for cooler temperatures, their food sources may be diminished and competition from other species increased. When life cycle stages (such as mating or blooming) occur earlier or later than usual, the presence of food, predators, and other significant factors differs substantially. Should the environment become inhospitable long-term, a species may face extinction.