Final answer:
Reptiles, including lizards and snakes, mostly lay shelled amniotic eggs on land, do not undergo a larval stage, and do not feed milk to their young. Some reptiles give birth to live young, but this is only characteristic of certain species.
Step-by-step explanation:
The question is asking whether lizards and snakes give birth to live young, lay eggs on land, feed milk to their young, and go through a larval stage. The factual answer for most reptiles, including lizards and snakes, is that they lay eggs on land, and they do not have a larval stage; their hatchlings resemble miniature versions of the adults. Also, reptiles, unlike mammals, do not feed milk to their young. Some reptile species give birth to live young, a condition known as ovoviviparity or viviparity, but this is not the norm for all reptiles. In fact, reptilian adaptations such as shelled amniotic eggs and the lack of parental care extensions such as milk-feeding are characteristic of reptiles. These traits show their adaptation to land-based life, as the eggs can be laid on land thanks to a hard or leathery shell that protects them from drying out and the young are immediately independent after hatching or birth.