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- Volcanic eruptions release gases like sulfur dioxide (SO₂), carbon dioxide (CO₂), and ash, contributing to air pollution naturally.
- Human activities (industrial emissions, vehicle exhaust, waste burning) are major man-made pollution sources.
- Other natural sources include dust storms, wildfires, and biogenic emissions from plants.
In the year 2014, the population of a village P was 20% more than the population of village R.In the year 2015, after increasing by 40%, total populatio...
If price of grains is increased by 50%, by how much percent a person has to decrease his consumption of grains so that expenditure on grain increases on...
An army lost 20% its men in war, 20% of the remaining due to diseases and 20% of the rest were disabled. Thus, the strength was reduced to 64,000 active...
'T' spends 20% of his monthly income on education, 35% on medical expenses, and 15% of the remaining amount on leisure activities. He saves the rest in ...
A Salesman is allowed 18% commission on the total sales made by him and a bonus of 1% on the sales over Rs. 40000. If the total earning of a salesman is...
M scored 30% marks in an exam whereas N scored 270 marks in the same exam. If the score of N is 90 marks more than that of M, then find the maximum mark...
A person spent 15% of his monthly income on food and 60% of the remaining on rent. If amount spent on rent is Rs 5798.70, then find the amount spent on ...
