typical explore urban research extreme mobile 4. If you are , you can move or travel easily from place to place. 5. A computer user spends 6 hours on social networking sites. 6. What sports do you like most? I love scuba diving. 7. If you do , you study something to learn about . 8. means being part of a city or town.

yes i have all the correct answers

1. c 6. b. 11. c

2. a 7. d. 12. d

3. c 8. b. 13. c

4. d 9. c. 14. d

5. c 10. d. 15. a

16. d. 21. a

17. d.

18. a. 22-30 you must do on

19. d. your own

20. d.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

it's c. (to reduce the greenhouse effect/carbon gasses)

ur answer is e & d

explanation: