Question

There were plenty of Ganges river dolphins, but very few are left now. This is because ___ .

• A. contamination in the river increase
• B. harmful chemicals make the river water toxic
• C. pollution degraded the health of the river
• D. river current increases significantly

Answer 1

Answer: (A), (B), (C)

The correct options are
A contamination in the river increase
B harmful chemicals make the river water toxic
C pollution degraded the health of the river

The Ganges river dolphin can only live in freshwater. In the last few decades, the level of pollution in the river Ganges has been increased in significant amount. The disposal of untreated sewage, industrial wastage, traditional rituals has contaminated the water which makes the survival of dolphins difficult. Hence, they started dying.