Explanation: Black Soil: These soils are black in colour and are also known as regur soils.

• Black soil is ideal for growing cotton and is also known as black cotton soil.
• It is believed that climatic condition and the parent rock material are important factors for black soil formation.
• This type of soil is typical of the Deccan trap (Basalt) region spread over northwest Deccan plateau and is made up of lava flows.

Source: NCERT