A slight majority, 53%, think teens should be at least 18 to get a license. The poll of 1,002 adults, conducted Dec. 17-19, 2004, has an error margin of +/-3 percentage points. Many states have begun to raise the age by imposing restrictions on 16-year-old drivers.
Do snakes really smell with their tongues? Snakes do use their tongues to smell! Snakes have nostrils, just like humans. But a snakeâs tongue is also very important. When a snake flicks its tongue in the air, it picks up tiny chemical particles. When the snake brings its tongue back into its mouth, the tongue fits into a special organ on the roof of the mouth. This special organ is called the vomeronasal system. The vomeronasal system takes those tiny chemical particles and tells the snake what they are.
A snake may appear threatening when it flicks its tongue out, but it's simply trying to get a better sense of its surroundings by tasting the air. To compensate for their poor eyesight and limited hearing, most snakes have an excellent sense of smell. Although snakes have nostrils, they also use their tongues to pick up the scent of nearby prey or predators. When a snake flicks its tongue, it collects odors that are present in miniscule moisture particles floating through the air. The snake darts the tongue into its Jacobson's organ, which is located inside the roof of the snake's mouth.