Cengage Advantage Books: Sustaining the Earth 10th Edition by Tyler Miller,Scott Spoolman

تمرين 7

Review the key Questions and Concepts for this chapter on p. 67. What is an ecological niche? Distinguish between a niche and a habitat. Distinguish between specialist species and generalist species, and give an example of each. State three facts about cockroaches that demonstrate that they are generalist species. Distinguish among negative, nonnative, indicator, keystone , and foundation species , and give an example of each. Explain why birds are excellent indicator species. Summarize the story of vanishing amphibians and their importance as indicator species. Explain why it might be a good idea to protect shark species.