Which of the following are the characteristics of fertile soil?

1. Adequate amount of moisture
2. Rich in nutrients
3. Organic matter
4. All of the above.

You had gone to a village near Patna. When you enquired about the type of soil you were told, it was ex situ. Which of the following is it?

1. Alluvial soil
2. Laterite soil
3. Red soil
4. Black soil.

Assertion (A): Transported soils do not have a well defined soil profile.

Reason (R): They constitute soils that are transported by various agents of erosion.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

Farmers plant trees in several rows to check soil erosion by …………… .

1. floods
2. winds
3. drought
4. heavy rains