Question

improvement in food resources class 9 notes​

Answer 1

Plant and animal breeding and selection for quality improvement and management, Use of fertilizers, Manures, Protection from pests and diseases, Organic farming. Food supplies proteins, carbohydrates, fats, vitamins and minerals, all of which we require for body development, growth and health.

Soil: (i) Macro-nutrients: Nitrogen, phosphorus, potassium, calcium and sulphur

Source: Nutrients