Describe the major components of air pollution.
Describe the major components of air pollution.
The major components of air pollution are soot, fly ash, dust particles, smoke and some gases like sulphur dioxide, carbon monoxide, nitrogen oxide, ammonia etc.
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Why is nucleus called director of the cell?
Name the plant tissue found in the husk of coconut and also identify the chemical which is responsible for its stiffness.
Which one of the following crops require a minimum quantity of NPK or urea for its proper growth paddy, peas, wheat, sugarcane.
What are the common symptoms of infection?
Explain different types of elements present in phloem.
Mention seven categories of hierarchical classification.