Author: Anonymous

43.  Which of the following is reported to cause deformities in amphibians in the Sierra Nevada’s of California?

10.  A population that is divided into several local populations among which individuals occasionally disperse is known as a:

34.  There are no trees in the tundra because:

30.  What two abiotic factors are considered to most affect organisms?

31.  Which of the following is an adaptation of black-tailed prairie dogs?

20.  A lake in which of the following locations would be expected to have the highest species richness?

17.  A transitional zone where two or more communities meet is known as which of the following?

40.  The ability to meet humanity’s current needs without compromising the ability of future generations to meet their needs is:

5.  What term refers to the average rate at which organisms produce offspring?

15.  Which organisms may be a keystone species in a tropical rain forest?