How can a person guard against arthritis?

stop moving
lose muscle mass
build muscle strength
eat protein

Ineed an essay 1200words about obezity ,introduction, main causes, conclusion

Blood cells bring oxygen to cells and take carbon dioxide away. true or false

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.