With reference to the physiological and ecological differences between Asian and African Elephants, consider the following statements:
1. Unlike African elephants where both males and females generally develop tusks, in Asian elephants, only males possess prominent tusks.
2. Asian elephants are characterized by a single, rounded dome on their head, whereas African elephants have a prominent twin-domed head.
3. According to the IUCN Red List, the Asian elephant is classified as 'Endangered', whereas all species of African elephants are currently classified as 'Vulnerable'.
Which of the statements given above is/are correct?