Stewart_Calc_7ET ch09sec06
MULTIPLE CHOICE
1. We modeled populations of aphids and ladybugs with a Lotka-Volterra system. Suppose we
modify those equations as follows:
,
a.
b.
c.
d.
e.
2. A phase trajectory is shown for populations of rabbits and foxes . Describe how each
population changes as time goes by.
Select the correct statement.
a.
At the number of rabbits rebounds to 500.
b.
At the number of foxes reaches a maximum of about 2400.
c.
At the population of foxes reaches a minimum of about 30.
