Geothermal energy is considered a renewable energy because it:
a: is heated water
b: is used to heat buildings
c: is made of natural gas
d: is continually produced inside the earth

[ou.01jthe greatest speed with which any physical object moves is 300,000 km/soundsec. which of the following has a speed of 300,000 km/sec? a.light in water b.light in vacuum c.sound in air. d. sound in water

In 2002, north korea announced that it was shutting down its nuclear facilities constructing a hydroelectric energy plant restarting nuclear weapon development changing to a free market economy

The earth’s most important nonrenewable energy source is