There are 18 english words/phrases on this picture:
- acid rain
,
- air pollution
,
- carpool
,
- coal
,
- conserve water
,
- geothermal energy
,
- global warming
,
- hazardous waste
,
- hydroelectric power
,
- natural gas
,
- nuclear energy
,
- petroleum
,
- radiation
,
- recycle
,
- save energy
,
- solar energy
,
- water pollution
,
- wind
