Question

What is a disadvantage of hydroelectric dams?
A. The creation of a reservoir downstream from the dam
B. The reduction of water flow downstream from the dam and the resulting ecosystem degradation
C. The reduction of water flow upstream of the dam and the creation of new ecosystems
D. The technology of hydroelectric dams is not adequate

Answer 1

It would be B: The reduction of water flow downstream from the dam and the resulting ecosystem degradation

Answer 2

Which of the following is a strategy to reduce energy consumption?
A. Incentives to buy bigger homes
B. Incentives to buy more consumer goods
C. Tax credits for purchasing energy-efficient appliances
D. Tax credits for buying a second refrigerator