A population that is at equilibrium
A) is experiencing a slow rate of growth.
B) is staying at about the same size.
C) is slowly declining because of increases in environmental resistance.
D) has most likely just lost a key predator.
B
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For the United States as a whole, thunderstorm activity is most intense in
A) September. B) July. C) April. D) March.
Thick deposits of loess form longitudinal desert dunes
Indicate whether the statement is true or false
Heavy rains and mudslides cause a river to change course, isolating two groups of lizards from one another. If the groups remain isolated from each other for a long period of time, ________
A) one group will probably become an endemic species B) both groups will probably go extinct C) both groups will probably become invasive species D) the groups will probably diverge genetically, and speciation may occur
Solifluction is an important mass wasting process in areas of permafrost
Indicate whether the statement is true or false