How could I escape depression

If the singular term ends in -us, the plural is usually formed by changing the ending to

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.

True or false a fertilized cell divides many times to form an embryo