What is three alliances explain its

• When several parties in a multi-party system join hands for the purpose of contesting elections and winning power, it is called an alliance or front.
• In India, there were three major alliances in 2004 parliamentary elections.
• These were the National Democratic Alliance or NDA formed by BJP and its allies. Then the United Progressive Alliance or UPA led by Congress and its allies. The third one was the Left Front, which is formed by Communists or their parties like CPI and CPI(M).<button aria-label="like this post" title="like this post">
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Abiotic factors are classified as-

Climatic factors include the climatic regime of an area with physical factors in the environment such as light, atmospheric temperature, wind, humidity, etc.

Edaphic factors, which relate to the composition and structure of the soil like its chemical and physical properties – like the soil type, soil profile, organic matter, minerals, soil water, and soil organisms. Inorganic substances like water, carbon, sulfur, nitrogen, phosphorus and so on. Organic substances like proteins, lipids, carbohydrates, humic substances etc.