A. treating industrial effluent and domestic sewage before discharge into water
B. Controlling the use of agrochemicals
C. recycling industrial and agricultural wastes
D. burning industrial and agricultural wastes before discharge into water ways
Correct Answer: Option D
D. burning industrial and agricultural wastes before discharge into water ways
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![A quantity of hot water at 100ºC is added to 400g of water at 10ºC until the temperature of the mixture is 60ºC. Calculate the mass of the hot water added. [Specific heat capacity of water =4200JKg-1 K-1]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A quantity of hot water at 100ºC is added to 400g of water at 10ºC until the temperature of the mixture is 60ºC. Calculate the mass of the hot water added. [Specific heat capacity of water =4200JKg-1 K-1]")