Which one of the following is the main cause of soil erosion in arid and semi-arid regions of India?

In which of the following regions of India, black soil is found ?

In which one of the following areas in India , the problem of soil erosion is critical?

Which one of the following is an organic soil?

Which one of the following is found in appreciable amount in Laterite soil in India?

Which one of the following is not a soil forming factor ?