Exam 14: Is the Human Population Too Large? Population Ecology

The steep and sudden decline in a population size as birth rates plummet and death rates soar is called

The carrying capacity of a given geographic region for a single population can change over time.

The principle of a carrying capacity corresponds to a pattern of population growth that's

A population has reached the carrying capacity of the environment when

When you look at the spacing of humans on a global level, the population follows a(n)________ distribution.

Which of the following is a density-dependent factor?

Students studying a population of salamanders in a vernal pool mark each salamander caught as it's entering the pool. During the first spring migration to the pool, the students mark 200 salamanders. The following year, they again capture 200 salamanders. Of these, 20 were from the previous year. Students use this information to calculate that they captured ________ of the total population and that the total salamander population in their pool is about ________.

Population density is called

The human population may continue to increase even though it surpasses carrying capacity.

Human populations don't generally follow the "boom and bust" cycle of some animal populations.

In some situations, the death rate of a population declines before the birth rate begins to decline. This is an example of

Red maple tree seeds are dispersed by the wind. This species of tree can be found in fields, woods, and even wetlands. This is an example of a ________ distribution.

Which of the following is represented by a completely "columnar" population pyramid?

Which activity could be best considered an example of an ecological study?

Scientists agree on the size of the carrying capacity of Earth for the human population.

All the bacteria of the species E. coli that live inside a cow's intestine represent a(n)

Which of the following would most likely result in a population represented by an "inverted triangular" population pyramid, which is heaviest at the top?

Which of the following must be an assumption of the mark-recapture method?

Most developed countries have passed through a demographic transition and currently have low population growth rates.

The human population growth rate is higher now than ever before.