Define the following terms: 1.1.1. Radiation 1.1.2. Degradation 1.1.3. Wavelength 1.1.4. Environmental hazards 1.1.5. Radioactivity 1.1.6. Radon​

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)