Fill in the gaps

5. Germany's coal _____ were concentrated in a few large fields.

10. The situation raises important questions about ____ among member states of the UN.

1. Discharging chemical ____ into the environment should be prohibited.

8. Air, water, and soil are necessary to the ____ of all living things.

7. Thousands of people research _______ energy because a breakthrough will change the world and make fortunes.

2. The ____ friendly products are designed not to harm the natural environment.

4. Oil spills are having a ____ effect on coral reefs in the ocean.

3. The health of our children is being ____ by exhaust fumes.

6. Solar energy, air, and water are renewable resources because there is an ____ supply.

9. The sports officials promised to provide modern ____ for the athletes to train.