Which ecosystem is least likely to suffer disruption and species loss from climate change?
A. temperate oak-pine and oak-hickory forests
B. coral reefs
C. coastal wetlands
D. high elevation forests
E. alpine and Arctic tundra
Answer: A
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Which data were used to develop the hypothesis of continental drift?
A) The shape of the continents B) The distribution of fossils C) The distribution of glacial deposits and directions of glacial scratch marks D) All of these are correct.
The percentage of carbon dioxide in the atmosphere (by hemisphere) varies by season because:
A) plants grow in the warm season and not in the cold season. B) more residential heating is required during the cold season. C) less plant decay takes place during the cold season. D) all of the above
How do the insoluble components of oil affect the ocean?
A) Prevent free diffusion of gas B) Clog feeding structures C) Decrease the amount of light penetrating the surface D) All of these choices
A solution of NaCl has a sodium ion concentration of 150. ppm. What is the chloride ion concentration in this solution?
A) 97.0 ppm B) 150. ppm C) 232 ppm D) 300. ppm