Question

1. Razia saw excessive growth of blue gree algae in nearby pond of her village.
2. Fish, which was previously in plenty were nowhere to be seen
3. The pond has started stinking. Water of the pond changes its colour and is found to be not suitable for the cattle. Some of the cattle who visited the pond for drinking and bathing have fallen sick.
4. What explanation will razia give for these anomalies to the paniced villagers

Answer 1

Fishes were not seen in the pond because blue green algae absorbs the oxygen available in water.due to which fishes donnot get more oxygen

Answer 2

razia gives that excessive growth of blue gree algea is not good for our health and also cattle. fish is also not good which is present in water. so avoid that pond and dig other pond.