non renwable sources(4)
gas, coal, oil nuclear
renewable sources(6)
geothermal, hydroelectric, tidal, wind, wave, solar
finite?
cannot be replaced once used up
renewable?
something being replaced as fast as its used
reliable?
can be used all the time
uses of energy resoucres (3)
transport, heating, electricity generation
enviroment impact of gas and biofuels?
acid rain