Question

Q1. What are natural and chemical fertilizers?Give two examples of each.
Q2.Differentiate between mixed cultivation and crop rotation.
Q3.Write a short note on two common food preservation methods.​

Answer 1

Answer:

1.Fertilizers fall into two general categories: organic, or natural, and inorganic, or chemical. ... Natural fertilizers are those formed through decomposition, while chemical fertilizers are manmade or mined. Natural fertilizers improve the texture of the soil and increase the amount of beneficial microorganisms.

2.Mixed cropping refers to the practice of growing two or more crops together on the same piece of land while crop rotation is the practice of growing different crops in succession on a piece of land. ... The basic aim of crop rotation is to maintain soil nutrient balance.

3.The term food preservation refers to any one of a number of techniques used to prevent food from spoiling. It includes methods such as canning, pickling, drying and freeze-drying, irradiation, pasteurization, smoking, and the addition of chemical additives.

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