ldquo Susu rdquo Dolphins are found in 1 River Ganga 2 River Brahmaputra 3 River Cauvery Choos...........

Environment and Ecology NCERT

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“Susu” Dolphins are found in

1. River Ganga

2. River Brahmaputra

3. River Cauvery

Choose the correct answer using the codes given below

3 only

2 and 3 only

1 and 2 only

1,2 and 3 only

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Explanation:

• In the fresh waters of river ganga and river Brahmaputra, a variety of dolphin locally called susu (also called blind dolphin) is found.
• Their presence is an indication of the health of the river. The untreated industrial and urban wastes with high amount of chemicals are killing this species.