diffusion is a critical process required for oxygen to leave the
alveoll of the lungs to enter the blood and for carbon dioxlde (a
waste gas) to leave the blood and enter the alveoll.
9. knowing what you know about how a substance travels in
diffusion, in order for oxygen to leave the alveoli and enter the
blood, there would be a (higher or lower ] concentration of
oxygen in the alveoli compared to the blood.
10. knowing what you know about how a substance travels in
diffusion, in order for carbon dioxide to leave the blood and enter the
alveoll, there would be a (higher or lower] concentration of
carbon dioxide in the alveoli compared to the blood.

11. explain your reasoning for questions #9 and #10.

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.

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.

a bird that nests only in a particular tree species.