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 carring out and its water had beccome unusable. Can you explain the reason for this condition of the lake?

During an educational trip, a student of botany saw a beautiful lake i

1.	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 carring out and its water had beccome unusable. Can you explain the reason for this condition of the lake?
Answer» tion:Due to WASHING of clothes in lake it added nutrients to water and due to this increase in nutrient level algae grew on it. VILLAGERS added WASTE to water which decomposed anaerobicly which RESULTED in stinking smell