1. Agriculture involves growing crops, fruits, and vegetables to earn a livelihood. The land used for growing crops is called arable land, and important inputs include seeds, fertilizers, machinery, and labor.
2. There are different types of farming including subsistence farming, which is done to meet the family's needs using low technology and household labor on small plots. Subsistence farming can be intensive or primitive.
3. Other types are shifting cultivation practiced in forested areas, nomadic herding in dry regions, and commercial farming including grain, mixed, and plantation agriculture. Major crops grown globally include rice, wheat, and cotton to meet population demands.