What system works with the circulatory system to add oxygen to the blood and remove caebon dioxide from the body?

Pl ! what do u do if you have a friend that is trying gain weight and you tell her to eat and that dont work so you just tell her that she dont have to be like every one else but then she cry

In some states the highway patrol use plane carrying radar device5s to monitor traffic as the plane flies over traffic the radar device can tell the officers how fast each car is moving at the moment in time the radar device determines the cars

Exercise equipment compensates for acting irresponsibly are disregarding the rules of physical activity