Sea-bottom habitats are being threatened by ____.
A. the largest ocean predator
B. jellyfish blooms
C. dredging operations and trawlers
D. coastal development
E. shrimp farming
Answer: C
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The reintroduction of the gray wolf has reduced biodiversity in the Yellowstone National Park ecosystem.
Answer the following statement true (T) or false (F)
The information of an energy pyramid reveals that for human food choices,
A) it is more expensive and less efficient to get most of your dietary calories from meats. B) it is more expensive and less efficient to get most of your dietary calories from grains. C) consumers at lower trophic levels do not have as much energy and biomass as consumers at higher trophic levels. D) consumers at higher trophic levels are usually more abundant than consumers at lower trophic levels.
The biome that is increasing significantly in size because of negative human activities is the ________
A) evergreen forest B) savanna C) grassland D) deciduous forest E) desert
Using the S-P timing method, epicenters can be located using seismograms from a minimum of ________ recording stations.
A. three B. one C. four D. two