по Amantha LovesKeyy 13 лет назад
3210
Больше похоже на это
Energy makes changes;it does things for us.
oil
natural gas
coal
fermentation
decay of organic matter
combustion
solar furnaces
the steam is then used to turn turbines to generate electricity
mirrors in solar furnaces heat water to generate steam
tides
wave
hydropower
wind
geothermal
solar
biomass