As a rule of thumb, a 10-fold increase in the abundance of an organism is associated with ________ in size.

A. a 10-fold decrease
B. a proportional increase
C. a 10-fold increase
D. no change


Answer: A

Environmental & Atmospheric Sciences

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Campi Flegrei, home to two million people, is a(n) ____

a. ?extinct lava dome b. ?active stratovolcano c. ?extinct resurgent caldera d. ?active resurgent caldera e. ?active shield volcano

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What is true of regional elevations across North America?

A. Elevations are highest in the Appalachian Mountains. B. Elevations do not change, when progressing from west to east. C. Elevations tend to be higher toward the west and decrease toward the east. D. Elevations are lowest in the Great Plains.

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Indicator species, such as lichens, generally have a(n) ________ tolerance range for a ________.

A. Broad; number of critical factors B. Narrow; critical factor C. Narrow; number of physical factors D. Broad; critical factor E. Average; number of physical factors

Environmental & Atmospheric Sciences