Place the following in order from highest to lowest expected partial pressure oxygen levels.

• cells of systemic tissues
• atmospheric air
• systemic capillaries
• pulmonary capillaries
• alveoli of lungs

Atmospheric air

Alveoli of lungs

Pulmonary capillaries

Systemic capillaries

Cells of systemic tissues

Explanation:

Partial pressure of oxygen levels in the blood is very important for the oxygen diffusion.Partial pressure  of oxygen is defined as the amount of pressure exerted by oxygen in the blood. If two adjacent areas have a different partial pressure of the oxygen, the oxygen will move from the area of higher concentration to the area of lower concentration until it reaches equilibrium. So this is a principle by which oxygen is picked up from the atmospheric air, transported through the capillaries and other vessels and delivered to the cells of systemic tissues.

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.