Which of the following statements is true regarding keystone species?
a. Animals can be keystone species, but plants cannot.
b. Top predators can be keystone species, but other animals cannot.
c. Insects can never be keystone species because they are pests.
d. Some keystone species are more vulnerable to extinction than other species.
e. A species must have a very large population size in order to be a keystone species.
D
You might also like to view...
The boundary between the zone of aeration and the zone of saturation is known as the
____________________. Fill in the blank(s) with the appropriate word(s).
In order to have significant snowfall accumulation, dew points must generally be above:
A) 10°F. B) 0°F. C) 32°F. D) -10°F.
Extreme evaporative cooling can sometimes produce explosions of straight-line winds called:
A) air bombs. B) downbursts. C) gust fronts. D) tornadoes.
The country of ________ has the largest negative current account balance
Fill in the blank(s) with correct word