The document discusses soil and its importance on farms. It defines soil as a thick brown carpet that covers the ground and provides habitat for many insects and small animals. Healthy soil is dark brown, crumbles easily, and is full of small holes and earthworms. It absorbs water like a sponge. The farmer ensures the soil is healthy so that grass, wheat, barley and other crops will grow well. Healthy soil leads to healthy plants, animals, and food for humans.