Walking through a national park, you step off a well-marked trail to take a photograph and accidentally trample a rare orchid. This is an example of
A) commensalism.
B) mutualism.
C) predation.
D) amensalism.
D
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____________________ facilitates one species developing into two through mutation and natural selection.
Fill in the blank(s) with the appropriate word(s).
The expansion of the African American clusters known as Ghettos was made possible mostly by
A) the emigration of whites known as "white flight." B) government assistance for housing in these areas. C) the building of high density housing units. D) land that was previously not used for housing. E) the emigration of Hispanics.
Which of the following is the oxidizing agent in the reaction which converts isocitrate to oxalosuccinate?
A) isocitrate B) NAD+ C) NADH D) FAD
A mass wasting process that involves rapid down-slope movement of debris aided by a cushion of air is called ________
A) a slump B) a rock avalanche C) a rock fall D) a rock slide