1.If the water temperature of a pond increases by a significant amount, which of
ID: 28443 • Letter: 1
Question
1.If the water temperature of a pond increases by a significant amount, which of the following would you expect to occur most immediately? A) The levels of DO would increase. B) The levels of DO would decrease. C) The levels of BOD would cease. D) The levels of BOD would decrease. E) All of the above. 2. The zebra muscle is an invasive exotic species that has been introduced to the Great Lakes basin. It has an incredible ability to filter nutrients and organic materials out of a body of water. If this is the case, which of the following would you expect to occur after a lake had become heavily populated with zebra muscles? A) The lake will become highly eutrophic. B) Rates of decomposition and BOD would decrease. C) The level of DO would increase in those bodies of water. D) Turbidity would increase as a result of the increased number of things in the water. E) Respiration in that body of water would stop all together. 3. Which of the following best represents the relationship between water temperature and DO? A) As water temperature increases DO increases. B) As water temperature decreases DO decreases. C) As water temperature increases its ability to hold DO increases. D) As water temperature decreases its ability to hold DO increases. E) There is no relationship between water temperature and DO. 4. Which of the following would be a likely outcome in the event that a water treatment plant (WTP) became flooded and was forced to release raw sewage into an adjacent river system? A) The level of chlorine in the river would increase upstream of the WTP. B) The level of nitrates in the river would increase downstream of the WTP. C) DO would increase downstream of the WTP. D) BOD would decrease downstream of the WTP. E) More than one of the above. 5. Which one of the following would NOT be a likely interpretation of the results of a shrimp egg hatching experiment if the control and the tested substance (say acid) had the exact same result, that none of the eggs hatched? A) the eggs were all dead B) we didnExplanation / Answer
1 a , 2 c, 3 e, 4 b, 5 a, 6 b, 7 a.
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