Exam 4: Community Ecology, Population Ecology, and the Human Population

Many large mammal species that have long generation times and low reproductive rates are described as having ____________________ biotic potential.

All of the following statements about human population growth are true except

The relationship between a lion and a zebra is of a(n)____________________.

A population with considerable ____________________ will have a low rate of increase.

A(n)____________________ is a species whose existence contributes dramatically to a diversity of life in a community.

Humans can extend the earth's carrying capacity for the species.Can the earth adequately support an exponentially growing human population without widespread environmental damage?

Although total fertility rates have decreased,the world's population has still not stabilized.

A population's growth rate will increase as the population reaches its carrying capacity.

-On the exponential growth of reindeer figure,choose the portion of the graph that represents the number of reindeer that exceeded the capacity of their environment.

-On the exponential growth of reindeer figure,choose the portion of the graph that represents the number of reindeer that can be sustained indefinitely in a given area.

The polar bear are ____________________ species to cold regions.

A population will increase if

Highly developed countries have high population growth rates because birth rates are high.

In a rapidly changing environment where conditions are unpredictable,the generalist species is better able to survive than the specialist species.

Non-native or invasive species are threatening and should be eradicated.

Factors affecting birth rates include all but which one?

What is the major ecological difference between generalist species and specialist species?

Populations can decline by increasing death rates. If this decline is gradual,the harmful effects can be mitigated. List three major problems associated with rapid population decline. Can you think of any positive outcomes of rapid population decline?

Approximately one-third of global amphibian species are threatened with extinction due to all but which factor?

-On the natural restoration of disturbed land figure,choose the letter that represents the start of secondary ecological succession.