Dead zones are characterized by a lack of ____.

A. phosphorus
B. nitrogen
C. oxygen
D. chlorine
E. fecal material


Answer: C

Environmental & Atmospheric Sciences

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a. two million b. 10 percent c. 1 billion d. 25% e. Half

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In the original form, the words "Geo" and "graphy" mean

a. Earth Analysis. b. The Study of Weather. c. The Study of Rocks. d. Urban Analysis. e. Ocean Analysis.

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Natural resources are distributed evenly across Russia the Near Abroad, so one region has not become favored over another

a. True b. False Indicate whether the statement is true or false

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The gases oxygen and carbon dioxide move in and out of cells through

A) diffusion. B) facilitated diffusion. C) active transport. D) endocytosis.

Environmental & Atmospheric Sciences