Question

Science: Write a note on green revolution. What are manures and fertilizers. Tamil : Rettai kalaviyai payanpaduthi 10 vakiyangalai eluthuga. Social: I) Define natural vegetation and it's classification.ii) why is it important to conserve natural vegetation? CAN ANS THIS ​

Answer 1

Answer:

In India, the Green Revolution applies to a period when Indian agriculture was transformed into an industrialized arrangement due to the selection of advanced techniques and technology such as the use of high yielding variety (HYV) seeds, pesticides, irrigation facilities, tractors, and manure

Explanation:

Answer 2

Answer:

1.green revolution

• Green revolution, great increase in production of food grains (especially wheat and rice) that resulted in large part from the introduction into developing countries of new, high-yielding varieties, beginning in the mid-20th centur.

2.manure and fertilizer

• Manure is the excrement of animals, and fertilizer can be a chemical composition such as phosphorus, nitrogen, potassium etc.
• Manure is usually a good source of nitrogen and phosphorus. Fertilizers can be mined from the ground, and manure is deposited there as a waste product.

social science

I)Natural vegitation and its classification:

• Natural vegetation means the plants that have not been grown by humans.
• The growth of vegetation depends on temperature and moisture.
• It also depends on factors like slope and thickness of soil. It is categorized into three broad categories: Forest, grassland and shrubs.

vegitation classification

(a) Forests: Which grow where temperature and rainfall are plentiful to support a tree cover. Depending upon these factors, dense and open forests are grown.

(b) Grasslands: Which

grow in the region of moderate rain.

(c) Desert Shrubs: Thorny shrubs and scrubs grow in the dry.

II)Importance of vagitation

• Vegetation is a key component of an ecosystem and, as such, is involved in the regulation of various biogeochemical cycles, e.g., water, carbon, nitrogen.
• Vegetation converts solar energy into biomass and forms the base of all food chains. Vegetation influences the energy balance at the earth’s surface and within the atmospheric boundary layer, often mitigating extremes of local climate.
• Vegetation releases oxygen and sequesters carbon.
• Vegetation affects soil development over time, generally contributing to a more productive soil.
• Vegetation provides wildlife habitat and food.
• Vegetation provides direct (e.g., timber) and indirect (e.g., watershed protection) socioeconomic products and services for humans.