Mid-oceanic ridges are often marked by lines of ________ that carry and precipitate metals.
A. ocean trenches
B. submarine volcanoes
C. ocean currents
D. hot springs
E. seismic ridges
Answer: D
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Ecotourism ________
A) increases biodiversity by providing income to areas that might otherwise be destroyed B) decreases biodiversity by causing increased speciation in environmentally sensitive areas C) is a reasonable option only in impoverished countries D) decreases biodiversity by selling souvenir organisms E) increases biodiversity by introducing new, rare species
Population growth has resulted in
A) increased demand for agricultural productivity. B) higher incomes. C) changes in consumption. D) all of the above. E) none of the above.
The force of gravity between two objects decreases as the square of the distance between the objects increases.
Answer the following statement true (T) or false (F)
If pollutants are emitted into the air and water, what costs might be incurred as a result?
A. compromised recreation possibilities B. decreased property values C. loss from destruction of wildlife habitat D. health injuries and all of the above