Across
- 4. People and animals breathe __________dioxide out.
- 5. Africa has a lot of ______________ countries.
- 8. Electricity generated from the sun. (2 words)
Down
- 1. ___________ energy that can be produced as quickly as it is used.
- 2. A lot of wildlife is losing its natural_______ because of human activities.
- 3. Whales are __________ animals.
- 6. fuels, such as gas, coal, and oil, that were formed underground from plant and animal remains.
- 7. The warmer weather is due to __________ change.