Write the letter of correct answer on the space provided

7.which of the following can prevent soil erosion
a. reforestation
b. deforestation
c. daming likes
d. reducing air pollution
8. what can occur in an area experiencing
a. the soil quality is reduced.
b. water pollution is clear up
c. vegetation is able to grow easily
d. crops are plant at an offsite location
9. which of the following is not an effect of soil erosion
a. water pollution
b. reduce soil quality
c. decreased crop quality
d. improved water quality
10. which of the following is tuition is most likely to lead to soil erosion
a. adding vegetation to an area
b. excessive tilling of a farmer's field
c.lack of sun for three weeks in a row
d. an unusually long dry spell for an area
11. which is a factor of mechanical weathering
a. acid rain
b. carbon dioxide
c. living organism
d. oxygen
12. rock that are made of can be broken down when carbon dioxide in air
a. acid
b. calcite
c. iron
d. rust
13.what is the color of the surface of the rocks that undergo combination of oxygen and iron
a. black
b. gray
c. rustic colored
d. white
14. which process involve the breaking down of rocks by wind water temperature and living organism
a. chemical weathering
b. deposition
c. erosion
d. mechanical weathering
15. how do plants contribute to weathering
a. hey friends expand when cooled
b. france contract with heated
c. roots remove the minerals of rock
d. roots of the grow into small space and graphs of rocks
16. it is a place where is psalms our extract by human
a. open fields
b. quarry
c. reservoid
d.road
17. one example of mechanical weathering is when animals
a. dig the soil
b. die on the rocks
c. break the concrete roads
d. walk on the surface of rocks
18. what is formed when carbon dioxide combines with water
a. carbonic acid
b. iron
c. oxygen
d. rust​