<span><span>Earth's atmosphere traps energy from the sun, whichcauses meteors to burn up.
allows ozone to form easily.
allows solar radiation to penetrate to the surface.
allows water to exist as a liquid.
Air has pressure because
wind moves the air.
the stratosphere is thick.
temperature warms the air.
air has mass.
The layer of the atmosphere between the stratosphere and the thermosphere is called the
mesosphere.
troposphere. (below stratosphere)
exosphere.
ionosphere.
When climbing a high mountain, you get out of breath easily because
air pressure is greater.
the air is more dense.
the percentage of oxygen in the air decreases.
there is less oxygen in each cubic meter of air.
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<span>Life expectancy in Sub-Saharan Africa is lower than that of more-developed nations.
Poverty is prevalent in Sub-Saharan Africa. </span>It is also<span> is the region with the highest prevalence (percentage of population) of </span>hunger<span>. When a person is malnourished as well as undernourished, he or she has lower immunity and is more prone to have diseases. </span>
