Heavy harvesting of which species during the 1970s reduced the population to about one percent of its original size?:
a. Bombus occidentalis, the western bumblebee
b. Haliotis sorenseni, the white abalone
c. Juga newberryi, a freshwater snail
d. Pyrgulopsis owyheensis, a springsnail
e. Capnia kersti, a stonefly
b
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You hear that a friend has had a traumatic injury to a part of their nervous system. The injury is interfering with nerve impulses between the brain and the rest of their body. There has been damage to the
A. motor neuron. B. spinal cord. C. sensory neuron. D. brainstem. E. medulla oblongata.
In the section "Investigating Life: Birds Do, Bees Do It", bumblebees pollinated M. lewisii, whereas hummingbirds preferred the red-flowered M. cardinalis. If a hummingbird carries M. cardinalis pollen to M. lewisii, the resulting hybrid offspring are viable. M. lewisii and M. cardinalis are different species because of
A. post-zygotic barriers to reproduction. B. pre-zygotic barriers to reproduction. C. punctuated equilibrium. D. gradualism. E. asexual reproduction.
Camouflage, mimicry, and behavior are all adaptations that support the idea of
a) struggle for existence b) inherited traits c) individualism d) survival of the fittest
For general clinical descriptions, which of the following planes is used as one of the planes to define four quadrants of the abdominal cavity?
(A) subcostal (B) transtubercular (C) midclavicular (D) transumbilical (E) midaxillary