Overtime our bodies age and are less and less able to deal with stress from inside and outside of our body true or false?

When do most people who become addicted to tobacco start using it

The maximum blood pressure in the upper arm of a healthy person is about 120 mmhg. if a vertical tube open to the atmosphere is connected to the vein in the arm of the person, determine how high the blood will rise in the tube. take the density of the blood to be 1040 kg/m3.

Does indrect sunlight does not pose any danger to the skin