Helpful Equations: Show set up and correct Math! PD = Pop/Area
r = (b+i) - (d+e) x100 DT = 70 /r (%)
1000 (or Pop given)
R. O.C = (Yr2 - Yr1) x100
Yr1
1) There are 4 million people living in Los Angeles. The area of Los Angeles is 400,000
square kilometers. What is the population density of Los Angeles?
10
I
2) The area of Chicago is 200,000 square kilometers. The population density is 100 people
per square kilometer. What is the population of Chicago?
0.005
3) There are 300 births in a mountain lion population in 2009. In 2010, there were 400
births in the same mountain lion population. What is the rate of change of the birth rate for
the mountain lion population?
10000
4) In 2012, there were 20 deaths of vampire bats in Costa Rica. In 2011, there were only
10. What is the rate of change of the death rate?
what?
5) Look at the data below and calculate the growth rates for the California Quail for each
year. The total population size is 1000 individuals.
Quails
Year 1
Year 2
Year 3
Year 4
Births
40
46
55
68
Immigration
2
5
7
2
Deaths
40
45
49
55
Emigration
1
0
1
4
Year 1:
Year 2
Year 3:
Year 4:
6) Describe the overall trend in population size in the California Quail population from
Question 5.