describe how human activities are affecting each cycle.
Pyramid of energy flow
Practice Questions – Chapter 4
Biodiversity and Evolution
What are the four major components of biological diversity? What is the
importance of biodiversity?
What is an endemic species? Why is it vulnerable to extinction? Distinguish
between mass extinction and background extinction.
What is species diversity? Distinguish between species richness and species
diversity and give an example of each.
Describe the “Theory of Island Biogeography”. Illustrate your answer.
What is an “ecological niche”? Distinguish between generalist species and
specialist species and give an example of each.
What are the reasons that the amphibians are vanishing? List some reasons
why we should protect them.
Describe the role of a beaver as a foundation species.
Give three reasons why we should protect sharks from being driven to