a hydrocarbon mixture consisting primarily of saturated light paraffins such as methane and ethane

renewable source of energy that generates power by using a dam or diversion structure to alter the natural flow of a river or other body of water.

the process by which the wind is used to generate mechanical power or electricity.

able or likely to cause harm or injury

energy comes from sources that will run out or will not be replenished in our lifetimes

a viscous liquid derived from petroleum

costing a lot of money

found mainly in underground deposits and widely used as fuel.

a condition or circumstance that puts one in a favorable or superior position.

the use of the sun's energy either directly as thermal energy (heat)

an unfavorable circumstance or condition that reduces the chances of success or effectiveness.

secure from threat of danger, harm, or loss