auses and consequences of changes in land cover and use.Р 49. The expression “And the list goes on” in Para. 1 is used to suggest that ________.Р A there are many more ways in which humans are hurting the environmentР B environmental degradation is continuing unabatedР C the total of animal and plant species facing extinction are too numerous to listР D in addition to fish, many other plant and animal species face over-exploitation by humansР 50. The poor condition of streams in the U.S can be attributed to ________.Р A overfishing of native fish species B lack of up-to-date monitoring equipmentР C the demand for water in the U.S. D the global water shortageР 51. Which of the following does the author NOT suggest as an important area for research?Р A How precipitation affects water levels.
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