Consider the following statement :

1. The Worldwide Fund for Nature was established in 1961.

2. The death of 13 lions in Nandan Forest Sanctuary of Odisha in July, 2000 was due to trypanosomiasis disease.

3. The tree eucalyptus is named as eco-friend.

4. The biggest aquarium in India is situated in Kolkata.

Of these statements:

U.P.P.C.S. (Mains) 2002