Which of the following is a recognized way that the processes of natural selection and speciation may mitigate the concerns of conservation biologists?
A. The fragmentation of habitats promotes geographic isolation of populations, an important aspect of speciation.
B. Species that go extinct provide additional resources for populations that remain intact.
C. Hybridization between an introduced and a native species can promote speciation, especially in plants.
D. Hybridization between two introduced species can promote speciation, especially in plants.
Answer: D
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Compare aerobic respiration and fermentation in terms of
(a) efficiency of obtaining energy from glucose (b) end products
Continuous phenotypic variations can be explained by Mendelian inheritance
a. True b. False Indicate whether the statement is true or false
Our ability to respond to moderate heat and cold is due to
A. mechanoreceptors. B. thermoreceptors. C. nociceptors. D. electromagnetic receptors. E. chemoreceptors.
Which non-specific defense mechanism is mismatched with its associated body structure or body fluid?
A) lysozyme — tears and saliva B) mucociliary escalator — intestines C) very acidic pH — stomach D) keratin and tightly packed cells — skin E) cerumen and sebum — ear