Answer: Building dams, dredging rivers and planting trees.
Explanation:
The process of land degradation is known as desertification in which the lose of wildlife, vegetation and as well as water bodies become increases. The desertification is mainly caused by the change in the climate and various types of human activities.
So, by planting more and more trees in our surrounding and dredging river prevent the process of desertification. The china also prevent the desertification by building dams as they store water for future used and reduce the process of desertification.
Answer:
I'm assuming you have to do the same thing for all three models given
1st model
Fraction: 
Decimal: 0.16
Percent: 16%
2nd model
Fraction: 
Decimal: 0.666
Percent: 66.666%
3rd model
Fraction: 
Decimal: 0.40
Percent: 40%
9. place E would be a better place because of there being no rock below to block it
More heat creates more water evaporation which goes up into the sky and when it gets cold enough up there the clouds turn into water and it rains