What are causes of pollution of Ganga ?

Explanation

**Step-by-Step Solution:**

1. **Introduction to the Ganga River:**
- The Ganga River is one of the longest rivers in India, flowing approximately 2500 km from the Himalayas to the Bay of Bengal.

2. **Urban Pollution:**
- Over 100 towns and cities in the states of Uttar Pradesh, Bihar, and West Bengal contribute to the pollution of the Ganga.
- These urban areas discharge their garbage and excreta directly into the river, turning it into a dumping ground.
...