Renewable Natural Resources
Chapter 5- Section 2
Solar
Advantages: Never runs out, clean and inexhaustible
Disadvantages: work less efficiently on cloudy days, can't work all night
Wind
Advantages: nonpolluting, free, does little harm to environment
Disadvantages: isn't steady, blows too hard, blows to slow
Hydroelectric
Advantages: always available
Disadvantages: have to build dam, lakes are filled with sediment
Geothermal
Advantages: use steam, rocks are found almost everywhere
Disadvantages:hard to control steam, hard to get
Biomass
Advantages: cheap source of energy, use wood
Disadvantages: lots of pollution, lessens tree population