Which of the following best describes most ecosystems?
A) They are sharply divided from other ecosystems.
B) They consist of two or more distinct landscapes.
C) They grade into other ecosystems in regions called ecotones.
D) They are clustered with other ecosystems to form communities.
C
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The territorial ambitions of the Nazi party in the 1930s exemplified the idea of
A) a multinational state. B) many states speaking a common language. C) dividing the country into eastern and western sections. D) a war against Italy. E) the nation-state.
A drawback to implementing environmental taxes and fees is that it ____.
A. penalizes low-income groups unless safety nets are provided B. helps bring about full-cost pricing C. encourages businesses to develop environmentally beneficial goods D. is easily administered by existing tax agencies E. introduces environmentally beneficial technologies
Judge the following sentence according to the criteria given below: The Hawaiian Islands are safe from tropical cyclones BECAUSE they are islands near the center of a large ocean
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
Research has identified the cause of plate tectonics to be ________
A) diastrophism B) convection C) sun spots D) warping E) uniformitarianism