During an educational trip, a student of botany saw a beautiful lake in a village. She collected many plants from that area. She noticed that villagers were washing clothes around the lake and at some places waste material from houses was destroying its beauty.
After few years, she visited the same lake again. She was surprised to find that the lake was covered with algae, stinking smell was coming out and its water had become unusable. Can you explain the reason for this condition of the lake?
The reason for the destroyed condition of lake was due to the disposing of the domestic waste generated in the houses of vilaggers and organic compounds like detergent in the lake Can provide nutrients for the rapid growth of algae and the aquatic plants and the decomposition of these with the help of bacteria produces foul smell. With the time the concentration of the nutrients in the lake increases. This development of plants in nutrient rich lake is due to the process called eutrophication.