Conservation biologists refer to the number of individuals needed for long-term survival as
A. the bottleneck.
B. K selected.
C. the minimum viable population size.
D. the carrying capacity.
Answer: C
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Inexhaustible resources exist in a fixed quantity, or stock, in the earth's crust.
Answer the following statement true (T) or false (F)
A gardener applied heavy doses of the same insecticide to her garden for two consecutive years to kill squash bugs
During the third year, although the squash bugs were reduced, the woman called in an expert to explain why she had an abundance of new pests that were destroying her garden. The expert explained that the abundant new pests were largely due to her previous use of an insecticide in a phenomenon known as A) pesticide resistance. B) secondary-pest outbreak. C) reverse mutation and adaptation. D) bounce back resurgence.
Of the total energy intercepted at Earth's surface and available for work, only about ________ is actually fixed by photosynthesis
A) 1% B) 5% C) 10% D) 15%
Read the following scenario and determine whether it is an example of a rockfall, rockslide, slump, or creep.A giant boulder falls from a 100 m steep slope onto the interstate, closing the road for several hours. Engineers investigating the damage conclude that the boulder was likely dislodged due to the action of frost wedging.
A. Rockfall B. Rockslide C. Slump D. Creep