What is tay-sachs disease (simplified response please)

Is the process by which biological parents pass traits such as hair type or eye color to their children. these traits may affect their well-being and health.

Ihave a really high metabolism and only weigh 70 pounds (13 almost 14). people always ask me two questions: do you ever eat and how do you eat so much and stay so skinny.i am worried that a high metabolism wont me forever. what are some safe steps i can take to maintain being fit. (also, i already work out i am a dacer so i get cardio a lot)

What kind of traffic sign is a red triangle with a white center? a. stop b. yield c. wrong way d. do not enter