According to the professor, what did the Soil Erosion Act do to improve soil conservation？

According to the professor, what did the Soil Erosion Act do to improve soil conservation？ Choose 2 answers.

A．It provided special equipment for farmers.

B．It encouraged farmers to use better farming techniques.

C．It turned damaged farmland into permanent grassland.

D．It increased the variety of crops grown on each farm.

此题为多项选择题。请帮忙给出正确答案和分析，谢谢！