An old-growth forest is a(n) ____.
A. commercial forest older than 30 years
B. forest undisturbed for at least 50 years
C. second-growth forest undisturbed for at least 100 years
D. replanted forest that has had little disturbance for 100 years
E. uncut or regenerated primary forest undisturbed for at least 200 hundred years
Answer: E
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For Marxists, labor is a commodity whose use value to employers is
A) more than its exchange value in wages. B) equal to its exchange value in wages. C) less than its exchange value in wages. D) unrelated to its exchange value in wages. E) leads to the problem of producing too little.
The rock type that is the source of most commercial asbestos is ____
A)serpentine B)amphibole C)pegmatite D)hematite E)biotite
Water vapor can best be described as a
a. ?gas. b. ?cloud droplet. c. ?rain drop. d. ?snowflake. e. ?liquid.
Maps are inherently inaccurate because they attempt to depict the curved surface of Earth on a flat sheet
Indicate whether the statement is true or false.