Which best describes heat by conduction? a. air molicules touch the ground warming them up. b. warm air rises and takes heat with it; eventually cooling and sinking c. sunlight travels through space without the aid of fluids or solids d. air at the equator rises and sinks at the poles

Aremote community desperately needs more electrical energy. it is located in an area with the following characteristics: average wind speed of 15 – 20 km/hr some medium-sized rivers with slow-moving currents few coal deposits some oil exploration being conducted within 400 miles based on the above information, which energy source would be the most economical and safest for the community to pursue? a. fossil fuel b. hydroelectric c. nuclear d. wind