Sustained elevated arterial blood pressure above 140/90 mm hg is a condition known as

Hypertension. The blood pressure is high if it is 140/90 or higher and if it maintained at this level for a long time. High blood pressure (hypertension) is factor of risk that increases the chances of  developing hart disease, stroke and other serious conditions.

The answer is atmosphere. there are four spheres of the earth: 1. geosphere (from greek word 'geo' = ground), 2. hydrosphere (from greek word 'hydro' = water), 3. biosphere (from greek word 'bio' = life), and 4. atmosphere (from greek word 'atmo' = air). a magnetosphere is a region of space around astronomical objects controlled by the magnetic field of that object. through the process of elimination, since lightning is present in the air, it can be found in the atmosphere.