Science Notes Answer Key - Our Impact on the Environment

1. -
2. Man
3. –
4. land, air, water, noise
5. Rubbish/refuse, minerals, pesticides, garbage
6. poison, growth, poisons
7. Biodegradable, decomposers, nutrients, Non-biodegradable, decomposers
8. gases
9. burning, burying, incinerators
10. chemicals, toxic
11. spills
12. soil erosion, soil, light, photosynthesis, oxygen
13. dust, smoke, monoxide
14. health
15. acid rain, metals, stones
16. global warming
17. sun, space, greenhouse effect
18. greenhouse effect, temperature
19. ice, sea level, flooding, extinct
20. noise, deafness
21. –
22. –

natural resources

1. natural recources
2. –
3. wildlife, soil, water, air, minerals
4. nitrogen, oxygen, carbon dioxide
5. oxygen, respire, carbon dioxide
6. energy
7. 75%, digestion, nutrients, waste materials
8. minerals, humus
9. –
10. alloys, plastics, ceramic
11. petroleum, coal, natural gas, electricity
12. land, aquatic
13. food, food, medicine, materials
14. oxygen, carbon dioxide
15. air, leaves, roots, soil erosion
16. replaced, replaced
17. air, water, wildlife, minerals
18. conserve, conservation, wise, care
19. reducing, reusing, recycling.
    reduce, water, electricity
    reuse, paper, boxes, bottles
    recycle, glass, paper, steel