Secondary succession occurs in which of the following?
A. an area where the ecosystem has been
completely wiped out by volcanic eruption
B. an area where the ecosystem has been badly
damaged
C. an area through which a glacier has retreated,
leaving bare rock

Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.

If there are 350 trout found in 200 square feet of a pond measuring 1000 square feet what is the estimated trout population of the pond? a. 1350 b. 1550 c. 1750 d. 2000

Which is the best example of plant tissue? the answer is d (just took the test)