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Chapter 50 Questions-1 - Ch 50 Multiple Choice Identify the...

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Ch 50 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Important abiotic factors in ecosystems include which of the following? a. temperature b. water c. wind d. A and C only e. A, B, and C ____ 2. "How does the foraging of animals on tree seeds affect the distribution and abundance of the trees?" This question ____ 3. Which of the following statements about ecology is incorrect? ____ 4. Which of the following levels of organization is arranged in the correct sequence from most to least inclusive? ____ 5. Ecology as a discipline directly deals with all of the following levels of biological organization except a. population. b. cellular. c. organismal. d. ecosystem. e. community. ____ 6. Landscape ecology is best described as the study of
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____ 7. You are working for the Environmental Protection Agency and researching the effect of a potentially toxic chemical in drinking water. There is no documented scientific evidence showing that the chemical is toxic, but many suspect it to be a health hazard. Using the precautionary principle, what would be a reasonable environmental policy? a. Establish no regulations until there are conclusive scientific studies. b. Set the acceptable levels of the chemical conservatively low, and keep them there unless future studies show that they can be safely raised. c. Set the acceptable levels at the highest levels encountered, and keep them there unless future studies demonstrate negative health effects. d. Caution individuals to use their own judgment in deciding whether to drink water from a potentially contaminated area.
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