Question

8 multiple choice 2 points what would increase energy efficiency in the united states? using public transportation and developing more efficient engines for vehicles insulating homes and businesses turning thermostats down in winter and up in summer all of the above. 9 multiple choice 2 points which of the following is a source of alternative energy? wind turbines hydroelectric dams solar collectors hydrogen fuel

Explanation:

For question 8, all options reduce energy waste. For question 9, all are alternative energy sources.

Answer:

1. All of the above.
2. wind turbines, hydroelectric dams, solar collectors, hydrogen fuel