I just returned home after being away 2 years

When studying heredity, what is the relationship of dna based and traits? super urgent !

Describe specific ways your friend can use frequency, intensity, time, and type to safely apply the overload principles to his workout schedule. provide two ways per training principle. sunday30-minute bike ride monday20 push-ups, 10 squats, and 20-minute jog tuesday30-minute bike ride wednesdayrest thursday20 push-ups, 10 squats, 25 curl-ups, and 20-minute jog friday30-minute bike ride saturdayone-hour walk

Explain what causes the skin to burn in the sun? explain why people should avoid the sun if taking a photosensitive medication?