Ans. The process by which soil is converted into loose form is called tilling or ploughing process. During this process big clumps of soil are converted into small clumps. Loosening is important because of following reasons:It allows plants to get easy access to water and minerals and along with that they can breathe easily.In loose soil microbes and earthworms can be easily grown as they increase fertility of soil.Nutrient-rich soil comes to the top and can be used by plants.