Across
- 1. A gas present in water
- 4. This is now the cheapest form of energy
- 6. The process of interaction and integration among people, companies and governments worldwide
- 7. These fuels include oil and coal
Down
- 1. Electricity from running water
- 2. Something that is spun around to make electricity
- 3. This kind of change is resulting in unusual weather patterns
- 4. S _ _ _ _ _ use plastics are amongst the worst pollutants
- 5. Warming caused by carbon emissions
- 6. This kind of energy is produced in a clean way