Generate 5 keywords for a research paper about climate change.
1. Greenhouse Gases
2. Global Warming
3. Carbon Emissions
4. Renewable Energy
5. Climate Mitigation.
Complete the following task based on the instruction and optional input provided.### Instruction:
Generate 5 keywords for a research paper about climate change.

### Output:
1. Greenhouse Gases
2. Global Warming
3. Carbon Emissions
4. Renewable Energy
5. Climate Mitigation.