Which of the following is NOT a densitydependent
limiting factor?
a. disease
b. parasitism
c. lack of living space
d. dramatic change in climate
e. all of these are density-dependent limiting
factors
D
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What do researchers typically focus on when they study a particular biogeochemical cycle?
I) the nature and size of the reservoirs II) the rate of element movement between reservoirs III) interaction of the current cycle with other cycles A) only I B) only II C) only III D) only II and III E) I, II, and III
A problem that is expected to develop with the occurrence of overpopulation is the ability to
a. grow enough food. b. find enough drinking water. c. find enough energy sources. d. find enough raw materials to meet the population's needs. e. all of these.
Which of the following describes allopatric speciation?
A) A population of squirrels is separated by the Grand Canyon. The two subpopulations evolve into two distinct species. B) A tetraploid plant species evolves from a diploid ancestor. Both the tetraploid and diploid species are found in the same habitat. C) One population breeds in the fall; another population breeds in the spring. D) A male horse and a female donkey mate, producing a sterile hinny.
Most prokaryotes reproduce via a form of asexual reproduction called prokaryotic fission
Indicate whether the statement is true or false