When the number of breeding animals within a species on an island is small, evolutionary change may be rapid through ____

A) ?favorable adaptations
B) ?natural selection
C) ?unfavorable mutations
D) ?physical isolation


D

Environmental & Atmospheric Sciences

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The resultant of a pair of equal-size vectors at right angles to each other is

A. ?2 the length of either vector. B. twice the length of either vector. C. equal to that of either vector. D. none of the above

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Which association is incorrect?

A) mesocyclone — region of tornado formation B) tornado watch — a tornado has been sighted on the ground C) downdraft — precipitation D) anvil - front of the thunderstorm

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What results following the evaporation of water that made up an oxbow lake landform adjacent to a meandering stream?

A. a cutoff meander B. an interfluve C. a yazoo stream D. a natural levee E. a meander scar

Environmental & Atmospheric Sciences

In 1997, ecological economists put a price on the goods and services provided by natural systems. This estimated annual value ranged from

A. $16-54 thousand B. $16-54 billion C. $16-54 million D. $16-54 trillion E. $1600-$5400

Environmental & Atmospheric Sciences