Environmental Science

4. _______Rain is naturally slightly acidic.
7. acidity puts stress on the fish, causing health issues and reduces their ___________ ability.
10. pure _______ is neutral.
11. Acid __________ has a negative impact on lakes, rivers, soils and plants.
15. a small change in the ______ level of rain makes it acid rain.
16. electrical ________ are also affected
18. __________ are paricuarly vulnerable to acidic waters.
19. Ozone in the _____________ degrades air quality.
21. Ove rime, it effects on each of these natural components __________ biodiversity.
23. ________ are wonderful refrigerants and aerosols propellants
24. When the pH level of rain falls_________ 5.6 , it is considered acid rain.
25. Most of the chemicals that destroy the stratospheric ozone conian chlorine and/or ___________

1. More than half of the ________-__________ in eastern Canad origionates from emmisions in the United States.
2. ________-_________ structure are also afffected by acid precipitation.
3. stratospheric ozone has also thinned over _____-________ regions, but to a lesser extent.
5. Many of these ozone-depleting substances are also powerful _____________ gasses.
6. Acid rain is created by _______dioxide or nitrogen oxide.
8. ________ is the type of ultraviolet radiation that causes sunburns.
9. _______ that consists mainly of limestone can largely neutralize the effects of acid presipition.
11. Figure 17.22 shows the ________ values of some common substances.
12. The soil in our province is _________ acidic.
13. when the pH level goes below 5, the _________ ecosystem collasps and all fish dissapper.
14. farmers neutralize acidic soil by buying and applying _________ to there fields and gardens.
17. Acid rain alters all food __________
20. Unfortuanlly,______ are also greenhouse gases that contribte directly to climate Change.
22. Another group of ozone-depleting chemicals, are used primarly in fire suppression systems.