climate change

1. effects

2. causes

2.1. burning fossil fuels

2.2. escaping refrigerants

2.3. cattle

3. green house gases

3.1. carbon dioxide

3.2. methane

3.3. water vapor

3.4. tropospheric ozone

4. ways to mitigate

4.1. plant trees

4.2. reduce consumption

4.3. eat less meat

4.4. travel less

4.5. use solor, wind or nuclear power