1) When an environment has reached its carrying capacity for a certain population, which of the following is true? A) Birth and immigration rate is equal to death and emigration rate.
B) Birth and immigration rate is less than death and emigration rate.
C)Birth and immigration rate is greater than death and emigration rate.
D) Growth rate is exponential.

2)The spotted owl is an endangered species found in the northwestern United States. Which environmental condition would most likely lead to the extinction of the spotted owl?
A)an abnormally cold winter
B)the immigration of a new species of prey
C)the clear-cutting of wildlife habitat
D)a drought that lasts for one year

3)In which population was birthrate most likely greater than death rate from year 8 to year 12?

A) Population 4
B) Population 1
C) Population 3
D)Population 2