Across
- 5. Which type of "energy" comes from natural sources like the sun or wind?
- 6. Main gas responsible for current global warming
Down
- 1. What happens to sea levels as polar ice caps melt
- 2. What is the name of the agreement signed in 2015 to limit global temperature rise?
- 3. What is a gas that traps heat in the atmosphere called?
- 4. In 1938 Guy Callendar made a historic discovery that the planet has ----