ENVIRONMENT

1. solutions

1.1. renewable energy

1.1.1. wind

1.1.2. solar

1.1.3. rain

1.1.4. wave

1.1.5. geothermal heat

1.2. selective garbage collection

1.3. energy efficient lightbulbs

1.4. limit CO2 emission

1.5. plant trees

1.6. reduce dependence on fossil fuels

1.7. recycling

2. natural disasters

2.1. flood

2.2. deforestation

2.3. drought

2.4. avalanche

2.5. storm

2.5.1. tornado

2.5.2. zunami

2.5.3. hurricane

2.5.4. blizzard

3. environmental pollution

3.1. exhaust fumes

3.1.1. deo sprays

3.2. sprays

3.3. factories

3.4. littering

3.5. CO2 emission

4. problems

4.1. global warming

4.2. greenhouse effect

4.3. ozone layer

4.4. climate change

4.5. extinction