Summarize the important benefits and negative impacts of large dams
What will be an ideal response?
Large dams can release water to generate power as needed. The reservoirs provide recreational areas and flood protection. Negative impacts include loss of land including farmland, destruction of wild rivers and wildlife habitat, fish migration and loss of spawning grounds, silt buildup, water quality issues and loss of nutrients for land below the dam. The reservoirs can be a natural breeding ground for mosquitos and certain snails, which carry disease.
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Determine dimension c in the accompanying figure to two decimal places. All dimensions are in inches.
A. 5.52 in B. 5.54 in C. 5.56 in D. 5.58 in
If there are 20 working days in a month, the monthly usage is 660 units, and there are 100 units on hand, approximately how many days' supply are there?
A) 33 B) 7 C) 3 D) 5
A snug-tight connection between framing members is obtained by
A) bolting the members and tightening them with a spud wrench using full force. B) welding the members together using gas welding. C) welding the members together using arc welding. D) bolting the members and tightening them with a spud wrench. E) none of the above.
Pesticides with moderate toxicity—1 to 2 tablespoons will kill a 150-lb. person—are labeled:
a. CAUTION c. DANGER—POISON b. DANGER d. WARNING