Se denomina “energías renovables” a aquellas fuentes energéticas basadas en la utilización del sol, el viento, el agua o la biomasa vegetal o animal -entre otras-. Se caracterizan por no utilizar combustibles fósiles –como sucede con las energías convencionales-, sino recursos capaces de renovarse ilimitadamente.
Answer:
The answer is 1: Occurs in fluids.
Explanation:
Convection happens when a lot of heat in fluids/gas move and/or take the place of particles with less heat.
Answer:
The correct answer is option B. "crude oil".
Explanation:
Crude oil was one of the first energy sources used for the production of electricity. Besides of its use as energy source, crude oil provides us with products such as ink, eyeglasses, and tires. Lower crude oil is used for some inks used for printing purposes; eyeglasses and sunglasses are considered petroleum based products for its need of crude oil; and crude oil is the primary raw material for the manufacturing of tires.
Because a jet engine needs air to propel the plane, and there is no air in space so there is no lift for the plane keep flying.
Hope this helps C:
