Environmental Science Unit 2

3. A source of emissions from mobile sources.
5. An indicator that measures the concentration of chemicals.
9. The measure of harm a substance can cause in humans and other living things.
10. The term used to describe the dose of a substance that is sufficient to kill 50%.
11. A source of emissions from a single discharge point.
12. The increase of a chemical in an organism.
14. A type of pollution that increases the noise in the environment.
15. The increase of a chemical in an organism directly from the environment.
20. A type of pollution that can change the temperature of the environment.
21. The release of large amount of nutrients in waterway resulting in algal bloom.
23. The probability that a substance or situation will cause harm.
24. A type of pollution where the pollutant finds its way indirectly into the environment.
27. The amount of salt that is in water.
29. The place where the organism lives.
30. An indicator that measures social or economic effects.
33. Use of a substitute material to avoid presence of them in the environment.
35. A type of pollution where the pollutant is added directly to the environment.
36. The presence or introduction of a substance into the environment which is harmful.
38. The potential for a substance or situation to cause harm.
39. A type of pollution that increases the amount of light in the environment.

1. A measure of how much of a pollutant a person is exposed to.
2. The process when chemicals are absorbed in the body through the skin. ______ absorption.
4. A single exposure or short term effects.
6. Removal of pollutants in society to stop the presence of them in the environment.
7. The increase of a chemical in an organism via the food chain.
8. A source of emissions that escape from their stored location.
13. The presence of a substance where it does not naturally occur.
16. Use of chemicals to help breakdown pollutants in the environment.
17. Multiple exposures or long term effects.
18. An indicator that measures the physical properties in the environment.
19. A material or substance that is discarded as no longer useful after the completion of a process.
22. A process or place that removes, stores or absorbs the pollutant.
25. A chemical that will cause cancer.
26. A harmful substance that can affect the environment
28. An indicator that measures organisms.
31. A source of emissions from a broad area.
32. The amount of variation an organism can withstand without harm.
34. The measure of fine particles suspended in the water.
35. The amount of a chemical absorbed per unit of body weight.
37. The description of an organisms role in the ecosystem.