Answer the following questions:
1. Why is it essential to ensure safe storage of food materials?
2. State any two desirable and undesirable features of chemical fertilizers.
Answer the following questions:
1. Why is it essential to ensure safe storage of food materials?
2. State any two desirable and undesirable features of chemical fertilizers.
(1) It is essential to ensure safe storage of food materials as it keeps the biotic factors such as pests, insects and mice away from the grains. Secondly, it also provides protection from various abiotic factors such as rain, moisture and humidity. Thus, the protection of food material ensures its availability to the population.
(2) Two desirable features of chemical fertilizers are:
• They contain the basic plant nutrients, which increase the fertility of soil.
• They are good for soil with low nutrients as they show immediate results.
Two undesirable features of chemical fertilizers are:
• Excessive use of chemical fertilizers over a long period may affect the alkalinity or acidity of the soil and may adversely affect the crop production.
• They are costly and cause water pollution during rain by running off from the field into the water bodies.
(1) It is essential to ensure safe storage of food materials as it keeps the biotic factors such as pests, insects and mice away from the grains. Secondly, it also provides protection from various abiotic factors such as rain, moisture and humidity. Thus, the protection of food material ensures its availability to the population.
(2) Two desirable features of chemical fertilizers are:
• They contain the basic plant nutrients, which increase the fertility of soil.
• They are good for soil with low nutrients as they show immediate results.
Two undesirable features of chemical fertilizers are:
• Excessive use of chemical fertilizers over a long period may affect the alkalinity or acidity of the soil and may adversely affect the crop production.
• They are costly and cause water pollution during rain by running off from the field into the water bodies.
