Calculating Population

the number of individuals in an area of a specific size

• growth rate

• limiting factor

• carrying capacity

• population density

Calculating Growth Rate: Suppose a population of 22 rabbits has produced 47 young in one year. If 11 rabbits have died, what is the growth rate of the rabbit population?

Calculating Growth Rate: Suppose a population of chipmunks has produced 89 young in one year. If 54 chipmunks have died, what is the growth rate of the chipmunk population?

Calculating Growth Rate: Suppose a population of 259 squirrels has produced 74 young in one year. If 83 squirrels have died, what is the growth rate of the squirrel population?

When calculating the growth rate, what does it mean when you get a negative number?

Calculating Population Density: An ecologist counts 480 rabbits in a wheat field that is 80 square meters. What is the population density of the rabbits?

Calculating Population Density: An ecologist counts 780 grasshoppers in a vegetable garden that is 12 meters long and 5 meters wide. What is the population density of the grasshoppers?

For a population’s growth rate to be zero

• more deaths than births must occur

• more births than deaths must occur

• no births can occur

• the average number of births and deaths must be the same

Professionals who study and make predictions about human populations are called

• stenographer

• demographer

• geologist

• populist

Tags

NGSS.MS-ESS3-4

Identify Negative Population growth

• A

• B

• C

• None