Sex ratio is the difference between males and females in a population. In China, sex ratio is an issue because of how favored males are. There is cases of femicide and girls are usually put up for adoption leading to an unbalanced sex ratio.
The world's population is distributed by population density.
These mountain ranges would be the Sierra Madre Occidental on the west and the Sierra Madre Oriental on the SE. The Sierra Madre Occidental at least has had historically some rich silver deposits. Both mountain ranges are part of the Western Cordillera which stretches from Alaska to the southern tip of South America.
Answer:
The washing away of topsoil by wind and water or
the process of eroding or being eroded by wind, water and many other natural agents.
Explanation:
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