Question

Section B : Very short answer type question

4. Write examples of mixed type of fertilizers.

5. What is eutrophication?

6. What is vermicompost?

7. What are nutrients?

8. What is manuring?​

Answer 1

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4} Example :- Ammonium sulphate and single super phosphate may be thoroughly mixed to get a mixed fertiliser.

5} Definition :- The process by which a body of water becomes enriched in dissolved nutrients that stimulate the growth of aquatic plant life usually resulting in the depletion of dissolved oxygen.

6} Definition :- Vermicomposting is a method of using worms to transform organic waste into a nutrient-rich fertilizer.

NOTE :-

It is a healthy and clean way to eliminate wastes going into our landfills, which improves the environment.

7} Definition :- Nutrients are molecules in food that all organisms need to make energy, grow, develop, and reproduce.

NOTE :-

There are two major types of nutrients that we need to supply our bodies with energy, macronutrients and micronutrients.

• Macronutrients are carbohydrates, protein, and fat.
• Micronutrients are vitamins and minerals.

8} Definition :- Manure is organic matter used as fertilizer in agriculture.

NOTE :-

Manures improve the fertility of the soil by adding organic matter and lots of nutrients, such as nitrogen that is trapped by bacteria in the soil.

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