Answer:
The return of blood to the heart is assisted by the action of the skeletal- muscle pump. As muscles move, they squeeze the veins running through them. Veins contain a series of one-way valves, and they are squeezed, blood is pushed through the valves, which then close to prevent backflow.
Answer:
It depends on the mg of pill, weight of your body and your body tolerance level.
Answer:
#1 fitness
#2 artificial selection
im not to sure about the other ones...
Explanation:
Answer:
yo- yo diet
Explanation:
Yo-yo diet is a method of cyclic loss of weight gain and loss which is called as yo-yo due to the up and down motion of a yo-yo.
In this type of diet the person who is dieting first looses the weight but then again gains it and then again goes on a diet to loose the gained weight.
In this type of dieting pattern a person initially starves and maintains a hypocaloric diet to enhance the efficiency of food use however, this starvation back fires as when the person starts eating again the tendency to eat more fatty food and high caloric intake increases.
