BIOL 3130 Study Guide - Midterm Guide: Reproductive Isolation, Mate Choice, Molecular Evolution
9 Apr 2015
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16-18 short answer questions (point form acceptable) first sentence = answer, following sentences = details, if relevant, use a case study to illustrate your point. The range and abundances of most classified species are poorly understood. Human population growth and the corresponding increase in human consumption rate are contributing to biodiversity degradation and loss - and will only continue to do so as the human population continues to increase. Anthropogenic climate change is rapidly altering ecosystems and will force what may currently be functional natural resource management plans to adapt. Question 2: what do past extinctions say about present-day concerns of an impending extinction crisis? extinction is a natural phenomenon, it occurs at a natural background rate of about one to five species per year. Scientists estimate we"re now losing species at 1,000 to 10,000 times the background rate extinctions tend to be followed by bursts in speciation, but speciation occurs at unpredictable rates (e. g. explosive vs gradual)
