谁英文好帮我改改这段Desertificationoccurswhenthelandturnstodesert.Thecausesmaybephysicalorhumanorboth.Theprimaryreasonsfordesertificationareoverpopulation,climatechange,over-cultivation,deforestationandover-gra

Question

谁英文好 帮我改改这段
Desertification occurs when the land turns to desert. The causes may be physical or human or both. The primary reasons for desertification are overpopulation, climate change, over-cultivation, deforestation and over-grazing. In today, 70 percent of Earth’s “dry land” is affected by desertification, and also desertification coast US$ 40 billion per year, because have 52,000 km2 of land turns to desert every year. That is a big global problem. Because have more than 1 billion people are affected by it. And drought and famine led millions of people died. Now I will talk about some causes of desertification. Because some of these causes are normal things, but it will led drought and famine, and the desertification will be the resulting, so we need to stop doing that, to protect our Earth. The two main causes of desertification are growing population and climate.

Answer 1

The causes may be physical or human or both.
改为：The causes may be physical or human,maybe either .
In today改为 today
and also desertification coast US$ 40 billion per year,because have 52,000 km2 of land turns to desert every year.
改为：and desertification coast US$ 40 billion per year as well.Because 52,000 km2 of land turns to desert every year.
That is a big global problem.
改为：this phenomena is really a large global problem.
Because have more than 1 billion people are affected by it.
改为：have删掉
Because some of these causes are normal things,but it will led drought and famine,and the desertification will be the resulting
改为：Although these causes are normal things,they will led drought and famine,which lead to the desertification.