Recent genetic research indicates that ____ or more individuals are needed for an endangered species to maintain its capacity for biological evolution
a. 10
b. 100
c. 1,000
d. 10,000
e. 100,000
D
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When the hydronium ion concentration equals 1 mole per liter, what is the pH of the solution? Is the solution acidic or basic?
A. pH = 0; this is an acidic solution. B. pH = 7; this is a neutral solution. C. pH = 10; this is a basic solution. D. pH = 1; this is an acidic solution.
The British brought workers from __________ to work in Malaya's tin mines.
A. India B. Japan C. China D. England
Suture zones in continents mark old sites of mantle plumes.
Answer the following statement true (T) or false (F)
In freeze/thaw or wet/dry conditions during soil creep, an individual soil particle tends to ________
A) slide downhill B) be lifted vertically C) slide downhill and then be lifted vertically D) be lifted vertically and placed at the same spot E) be lifted vertically from the ground surface and placed slightly downhill