In addition to bushes which of the following are grown along the boundary of the fields?

What is the process of growing more trees by planting saplings?

Ploughing of which one of the following is yet another human factor that leads to soil erosion?

Along river banks which of the following are built to prevent flood?

What does the land lose as a result of soil erosion?

Which is the upper most layer of earth?

Which of the following is known as the sorrow of China?

What do the natural forces like wind, rain and running water help in?

Which of the following washes the soil off the hill slopes?

Cutting the slope into steps or terraces can reduce: