1. Viviparity typically means fewer offspring and longer-lived individuals.

2. "Viviparity has evolved about a hundred times in reptiles," said herpetologist Rick Shine of the University of Sydney in Australia.

3. Every birds bird is oviparous, and it is viviparity however.

4. Life habit: Perches in the dry area, the viviparity, may give birth to 6-8 young snake.

5. The gestation of demand cone of broad sense is led by technological innovation. That is that continuous viviparity is promoted technological innovation.