The minimum age to obtain one's driverâs license should not be raised to 18 because 16-year-olds have a much more focused mind. If you change the minimum driving age to 18, it will be very little different from 16-year-olds because either way they wouldn't have very much driving experience.
Snails make their own shells.They make it with a muscle called the mantle.The mantle then releases liquid.When the liquid hardens it forms the shell.Later in the snails life t â¦ he mantle releases more liquid and the shell becomes bigger.
Some species, such as native slugs, have soft, jelly-like eggs, while flax snails and kauri snails have eggs with a hard, calcified shell. The eggs can be quite large - up to about 13 mm in diameter in giant snails. The eggs develop for some time; the young snail and slug hatchlings resemble adults.