What kind of trait is present when many different genes control a single trait such as skin color?

Jake used to go surfing with his friends several times each week recently he has been spending a lot of time playing computer games what do you predict will be result of this change

Who is responsible for regaulating noise pollution

A72-year-old woman fell in her bathtub and fractured her hip. in viewing the fracture, x-ray revealed osteoporotic changes in her bone as well. after reduction of the fracture, and immobilizing the bones with internal pins, what type of exercise would the doctor have advised her to do as soon as she was able in addition to prescribing calcium supplements to improve her bone mass?