Here are the sentences filled in with the appropriate words:

1. Air **pollution** from vehicles and factories can be harmful to our health and the environment.
2. Plastic bottles and bags can **damage** marine wildlife if not properly disposed of.
3. Fossil fuels **cause** greenhouse gases and contribute to global warming.
4. Pollution can **affect** the natural habitats of many wildlife species.
5. Water pollution is a serious water **issue** in many parts of the world, leading to unsafe drinking water.
6. Forest **burn** can lead to loss of valuable trees and disrupt the balance of ecosystems.
7. **Tourism** is a major industry in some regions, but it can also lead to environmental problems.
8. When the environment is polluted, it can negatively affect the **wildlife** living in it.
9. Pollution in the air and water can cause various health problems, including respiratory **disease**.