One challenge to the protection of endangered animal species from overexploitation for commercial purposes, such as rhinoceros horns, is that as a species becomes increasingly rare,
A) the laws protecting that species tend to become even more restrictive.
B) the price of illegal animal products increases.
C) it is more difficult for poachers to capture the animal.
D) fewer poachers may search for the endangered animal.
B
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Why do some geologists believe a meteorite impact was not the sole cause of the extinction event at the end of the
Mesozoic? a. Iridium is not always found at the boundary between Cretaceous and Paleogene rocks. b. Meteorite impacts cause local extinctions, not global extinctions. c. The meteorite hit at the end of the Jurassic, while extinctions occurred throughout the Cretaceous. d. The location of an impact crater has not been discovered, and likely never will be. e. Terrestrial and marine extinctions have not been shown to occur at the same time.
Points on a map to the same side of a certain contour on a topographic map will all have
A. rivers and streams that run parallel to the contour line, while points on the other side of that contour have rivers and streams that do not run parallel to the contour line. B. more similar climate than points to the other side of that contour line. C. elevations that are all above, or all below, the elevation that the contour represents. D. the same mineral composition, unless there is no index contour on the map.
Among the world's primary food security concerns is that the world's growing urban areas continue to be entirely dependent on the world's shrinking rural areas for food
Indicate whether this statement is true or false
At night, when the weather is extremely cold and dry,
a. atmospheric pressure increases with increasing altitude. b. atmospheric pressure remains constant with increasing altitude. c. atmospheric pressure decreases with increasing altitude. d. atmospheric pressure first increases, then decreases with increasing altitude.