1. _____ refers to the gradual increase in the Earth’s average temperature.
2. _____ includes long-term changes in weather patterns such as droughts, floods, and stronger storms.
3. _____ means cutting down large areas of forest, often destroying natural habitats.
4. _____ is caused by harmful gases and smoke from cars, factories, and other human activity.
5. _____ can harm fish, plants, and the people who depend on clean water.
6. _____ includes dangerous substances from industry that can contaminate land and water.
7. _____ often remains in nature for many years and threatens marine life.
8. _____ happens when too many fish are caught and populations cannot recover naturally.
9. _____ are animals or plants that may disappear completely in the future.
10. _____ comes from natural sources such as sunlight, wind, or water.
11. _____ are devices that turn sunlight into electricity.
12. _____ use the power of moving air to generate electricity.