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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.
The population of a city is decreased by 14% in the first year and then increased by 25% in the second year. Find the population of the city at the end...
P spends 22% of his salary on transportation, 30% on food, 15% on children’s education and 25% on medical. He deposits the remaining amount of Rs....
Office A has 1250 employees, of which 44% are boys, and the remaining are girls. Office B has 12% more employees than Office A. I...
Each of the articles was marked 55% above its cost price and while selling ‘y’ % discount was given on it. The selling price of the article M is Rs....
What will be the fraction of 20%
Divakar spends 30% of his salary on house rent, 20% of the remaining amount on shopping, 25% of the remaining on education fees, and the rest is divided...
Niharika saves 25% of her salary in National Savings Certificate and spend 80% of the remaining amount on household items. If the cash in hand is Rs....
Monthly income of A is Rs. 12000 and he saves 44% of his monthly income. If monthly expenditure of A is decreased by 35% while his monthly savings is in...
Monthly income of A is Rs. 6500 and he saves 36% of his monthly income. If monthly expenditure of A is decreased by 35% while his monthly savings is inc...
