What are true for hydroelectric energy?
a. It is clean and renewable
b. The large reservoirs behind the dams of hydroelectric power plants may provide irrigation water
c. The construction of big dams and reservoirs may also damage the ecosystem
d. Reservoirs trap sediment and nutrients and may affect agriculture
e. All of the above
Answer: e. All of the above
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Answer the following statement true (T) or false (F)
If poverty stricken people in developing countries engage in activities that degrade valuable natural resources, which two statistics do you think are driving those actions?
What will be an ideal response
Explain why runners on a clear, windless, summer afternoon may experience air temperatures of over 50 degrees Celsius (122 degrees Fahrenheit) at their feet and only 32 degrees Celsius (90 degrees Fahrenheit) at their waist
A 1000-kg car accelerates at 2 m/s2. What is the net force exerted on it?
A. 2000 N B. 500 N C. 1000 N D. 1500 N