1) Which of the following might cause an exponential increase in deer populations across the United States?

A) reduction in parasites that are found in emaciated deer

B) reduction in the population of wolves and bobcats

C) increase in atmospheric carbon dioxide levels

D) improvement in forest soil

2) Which of the following might an ecologist study?

A) general nature of digestive enzymes of deer

B) genetics of mosquitoes

C) effects of increasing carbon dioxide on forest growth

D) function of the immune system in human populations

3) Studying the egg production rates of a certain species of frog in a particular pond would be an example of studying ecology at which level?

A) ecosystem

B) population

C) biosphere

D) community

4) Studying the changes in densities of pocket gophers when large herbivores such as elk are excluded from mountain forests would be an example of studying ecology at which level?

A) community

B) ecosystem

C) biosphere

D) population

5) Studying the amount of carbon stored in the forest floor per hectare in a boreal forest in Canada after a fire would be an example of studying ecology at which level?

A) biosphere

B) ecosystem

C) community

D) population

6) Studying the variations in the number of carp in Lake Erie over a 20-year period would be an example of studying ecology at which level?

A) community

B) population

C) ecosystem

D) biosphere

7) Studying the total amount of oxygen generated and released into the atmosphere by living things would be an example of studying ecology at which level?

A) community

B) population

C) ecosystem

D) biosphere

8) A community ecologist might study:

A) the behavior of a species in its natural environment.

B) all the members of a single species that live together in a single geographic area.

C) the rates of increase or decrease in the population size of individual species in different environments.

D) the interactions among species living in a single area.

9) Generally speaking, which of the following would be the best description of ecology?

A) study and preserve the environment

B) study and conserve the environment

C) study the environmental conditions that plants and animals depend on for survival

D) study the interactions of living things with each other and their environments

10) Which of the following is true of exponential growth?

A) Exponential growth occurs when there are many environmental limits to reproduction.

B) Exponential growth resembles an S-shaped curve when plotted on a graph.

C) Exponential growth is growth that continues accelerating with time.

D) Exponential growth resembles a straight line when plotted on a graph.