• using electricity
• drinking water
• eating food
• driving a car
• using packaged products are all...

• tobacco
• addictive drugs
• excessive amounts of alcohol

• lead, pesticides, chemicals, radioactive substances
• air, water, land pollutants
• stress of living in crowded urban, social and work conditions
• bacteria, viruses, animal parasites, fungi

• resources that cannot be replace and are gone forever
• examples include fossil fuels, natural gas, coal, petroleum

• sources of energy that is depleted quickly
• inexpensive to manufacture/use
• used to produce electricity
• takes a long time to form
• buring it causes pollution

what is this?

• a type of resource that can be used over and over
• examples include wind, ocean waves, biomass, geothermal, water, solar

• earth's internal heart
• hot water and steam coming out of the ground (geysers)
• used to heat homes/produce energy
• used in California

disadvantage: only in areas where the earth's heat rises to the surface

• corn/other grains used with gas to run cars
• use plant matter/animal waste to form fuel
• minimum environmental impact
• expensive and difficult to produce

disadvantage:carbon dioxide and greenhouse gases is created which is harmful to the environment

• an inexhaustible resource
• expensive to produce
• use with sun to produce energy

• have turbines that rotate blades to convert kinetic energy into electrical energy
• almost no polution is produced

disadvantage: loud noise, need lots of land, some birds can get killed by the turbine's propellers