Why do secondary consumers typically have larger area requirements than other trophic levels?
a. They photosynthesize, and so need larger shade-free expanses. b. They need to consume a large amount of vegetation in order to survive. c. They only receive a small portion of the energy from lower levels in the food chain. d. The basis of the question is false. Secondary consumers do not need larger areas. 10. True/False: Most species will be able to move to suitable habitat in response to rapid climate change. Answers 1. True 99% of the species that have ever lived are extinct. 2. C the Permian mass extinction resulted in 96% of species going extinct. 3. D 4. D Predators and disease do enter more easily; it is more difficult for populations to be rescued, and it is more difficult for them to move in response to climate change. 5. False because of the reasons above. 6. False if the species extinction had few consequences, it was not a keystone species. 7. C 8. A beaver numbers decreased due to increased competition for food with elk. 9. C 10% rule 10.
