Air mass, letter a is the correct one
The point in the sky directly above your head at any given time is called the. zenith. The celestial sphere turns once around each day because. the celestial sphere does not move, is the earth that turns around once each day. The south celestial pole and the north celestial pole lie in the sky directly above the.
<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>
