Which site will most likely experience rapid erosion?
A. 1, cliffs composed of hard rocks
B. 2, sediments in a delta
C. 3, the seafloor deep beneath the waves
D. 4, the coastline of a bay
E. 5, the coastline in a branching embayment
Answer: B
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Which of the following statements accurately describes the action of ozone?
A) It absorbs UV radiation and undergoes fragmentation. B) It reflects UV radiation back into space. C) It reflects heat back into space. D) It emits UV radiation when excited by sunlight. E) none of the above
Environmental pollution by endocrine disruptors often decreases biodiversity by
A) dramatically changing abiotic factors in the environment. B) favoring invasive species in a region. C) spreading pathogenic microorganisms in natural environments. D) causing developmental and reproductive abnormalities.
The single greatest threat to irrigated agriculture is
A) groundwater depletion. B) global warming. C) flooding. D) pollution from hydroelectric dam projects.
The objective of a species recovery plan is to
A. Invest corporate capital in species maintenance B. Interbreed threatened species with common species C. Increase an endangered species population until it is no longer endangered D. Study the species for a better understanding of its role in the biological community E. Protect the species to aid other organisms and resources in the ecosystem