Apes test 4

If a city of population 10,000 experiences 100 births, 40 deaths, 10 immigrants, and 30 emigrants in the course of a year, what is its net annual percentage growth rate?

0.4%

Moose carrying capacity

1500

Which of the following statements about levels of biodiversity is correct

A population with high genetic biodiversity is better able to respond to environmental stressors

By the year 2050, world population is expected to approach 10 billion. If the current population trends continue, which region of the world will most likely experience the majority of the growth?

Africa and Asia

Island B, 1*10^6

Island b

Which of the following events occurred after the glacial retreat

Primary succession

Five different species of warblers lives in the same tree. Which of the following best explains why the different warbler can all have habitats in the same tree

Resource partitioning of the seed reduces competition, and the five different species can live in the same tree

Salamanders, ospreys, snapping turtles, and beavers all live in aquatic habitat. Salamanders lay their eggs in small freshwater ponds and feed on insects.

Salamanders

A small developing country with negligible rates of immigration and emigration is going through a demographic change. Thirty years ago the crude birth rate was 44 per 1000 per year and the crude death rate was 17 per thousand per year. Now the crude birth rate is 16 per 1000 per year and the crude death rate is 5 per 1000 per year. Which of the following statements about the country now is most likely to be true?

The country is at the industrial stage of the demographic transition.

Although the fertility rate for women in the united states has declined in recent years to a value below replacement level, the united states population is still increasing because of

immigration

Members of an r-selected species characteristically

reach sexual maturity quickly