Which factor increases the likelihood of population extinction?
A. High genetic diversity
B. Large population size
C. Isolation of a population from sources of immigrants
D. High resource availability
E. Isolation of a population from density-independent effects
Answer: C
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What is the general global pattern of species richness?
A. Increasing from east to west across continental land masses. B. Increasing from polar areas towards the tropics. C. Increasing from tropical seas into temperate forests. D. Increasing from the tropics towards polar areas. E. Increasing from clay soil types into organic soils.
Which of the following plants CANNOT participate in nitrogen fixation?
a. beans b. clover c. peanuts d. alders e. wheat
Which term refers to an electromagnetic radiation that is of the longest wavelength and lowest energy?
a. radio waves b. gamma rays c. UV light d. X-rays
Under some circumstances, ________ is beneficial, but under other conditions the bacteria become overabundant leading to inflammation of hair follicles
A) Propionibacterium acnes B) Pseudomonas aeruginosa C) Streptococcus pyogenes D) Microsporum E) Bacillus anthracis