Environmental Issues

2. a long period where there is little or no rain
4. the atmospheric conditions which relate to a specific time and place
5. a layer of oil that is floating over a large area of the surface of the sea, usually because of an accident
8. a transparent gas that is either emitted or absorbed by all living things
10. animals or plants in danger of becoming extinct in the near future
13. damage caused to water, air, land, etc. by harmful substances or waste
14. a layer of air high above the earth which prevents harmful ultraviolet light from the sun from reaching the earth
17. the power from something which can do work, such as providing light and heat
18. to put organic waste into a large container that breaks down into healthy soil
20. the number and variety of plant and animal species that exist in a particular area
23. a weather condition that contains large amounts of harmful chemicals as a result of burning fossil fuels
24. able to decay naturally and harmlessly
26. typical weather conditions for a specific part of the world
27. a rise in the earth's temperature caused by an increase in greenhouse gases
28. sources of energy derived from the remains of living things that died a long time ago

1. things such as minerals, forests, coal, etc. which exist in a place and can be used by people
3. the cutting down of trees in a large area
6. major, long term changes to global weather patterns
7. the poisonous gas formed by the burning of carbon, especially car fuel
9. natural habitats that support different kinds of animal and plant life
11. the air, water, and land in which people, animals, and plants live
12. unwanted material of any time, often which is left after useful substances have been removed
15. the layer of air surrounding the earth that protects us from the sun's harmful rays
16. a form of energy that can be produced as quickly as it is used
19. energy generated by the sun and filtered by the atmosphere
21. when a plant or animal species dies out
22. a measurement of the amount of carbon-dioxide that a person adds to the atmosphere
25. gases and other substances discharged into the air