What's a simple way to explain what trachea means ?

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.

Which word can describe a person's gender identity? a) female b) intersexual c) asexual d) androgynous

An _ exposure is a repeated or prolonged exposure(over months or years) that may bring about slowly developing symptoms.