Question

1. we know that population sizes change over time. all statement(s) are true about this change except

when there are more births then deaths the population size will increase.
when there are more deaths then births the population size will decrease.
when there are more births then deaths the population size will decrease.

1. all of the following are factors that affect a populations size except *

availability of resources.
predator/prey relationships.
changes in the environment.
reproductive success.
no exceptions - all statements are true.

1. the wolf population on isle royale is presently very low despite the fact that the moose population is high. what statement best represents what this might mean?

wolves dont eat moose.
the moose population has no affect on the wolf population.
there must be other factors beside availability of food that are affecting the wolf population.

Explanation:

Question 4:

When births exceed deaths, population increases; when deaths exceed births, it decreases. The false statement is the one saying more births than deaths lead to decrease.

Question 5:

Availability of resources, predator - prey relationships, environmental changes, and reproductive success all impact population size. So no exceptions.

Question 6:

Since wolves eat moose and moose population is high but wolf population is low, other factors besides food availability must be affecting wolves.

Answer:

Question 4: When there are more births then deaths the population size will decrease.

Question 5: No exceptions - all statements are true.

Question 6: There must be other factors beside availability of food that are affecting the wolf population.