Populations Math

If a country has a crude birth rate of 24 per 1,000 and a crude death rate of 8 per 1,000, the natural annual percent increase of its population is

• 0.6%

• 1.6%

• 3%

• 32%

The maximum population size for a herd of caribou in a given area was 500,000. A herd of caribou currently has a population size of 198,000 caribou as a result of habitat loss. Which of the following methods should be used to determine the percent change between the maximum population and the current population for this herd of caribou?

• (500,000 + 198,000) / 198,000 × 100

• (198,000 − 500,000) / 500,000 × 100

• 198,000 / 500,000 × 1,000

• (500,000 − 198,000) / 100

If the population of a country grows at a rate of approximately 5 percent per year, the number of years required for the population to double is closest to

• 5 years

• 10 years

• 15 years

• 25 years

What is the population doubling time in years for a country with an annual growth rate of 3.5 percent?

• 0.5

• 20

• 24.5

• 70

Human population growth in 2018 was 1.07%. If this rate of growth remains constant, in what year will the human population double?

• 2083

• 2088

• 2092

• 3904

Tags

NGSS.HS-LS2-2

Using the data from the table, which of the following is the growth rate for China in 2019?

• 0.38%

• 0.49%

• 0.60%

• 0.68%

Which of the following calculation methods would determine the percent change in the crude birth rate from 1994 to 2019?

• (17.6−11.9) × 100

• (11.9−17.6)/17.6 x 100

• (17.6 + 11.9)/17.6 x 100

• 11.9/17.6 × 100 

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%

• 0.8%

• 1.0%

• 4.0%

Tags

NGSS.MS-ESS3-4

Based on the data in the graph, which of the following is closest to the average population growth rate per year from year 4 to year 7 in the rabbit population?

• 1342 rabbits per year

• 1014 rabbits per year

• 338 rabbits per year

• 210 rabbits per year

Tags

NGSS.MS-LS2-4

A country currently has a population of 100 million and an annual growth rate of 3.5 percent. If the growth rate remains constant, what will be the population of this country in 40 years?

• 150 million

• 200 million

• 300 million

• 400 million

Tags

NGSS.HS-LS2-2