the major cause of ozone depletion is chlorofluorocarbons (CFCs) and halons gases formerly found in aerosol spray cans and refrigerants are released into the atmosphere.
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Most work in mines. Central and west africa have some of the richest diamond, silver and iron mines in the world.
In Rwanda, there are more young children than teenagers, and more teenagers than adults. This age structure indicates a population that <u>Will double in 30 years</u>
While declining population frequently have more modest level of individuals in these age gatherings, developing populaces ordinarily have higher extents of individuals in more youthful age gatherings. Populaces that are steady normally have a higher extent of individuals in conceptive age gatherings.
The world's populaces are maturing because of declining rates of birth and increasing future. Because of this segment shift, the level of people beyond 60 years old has expanded.
More individuals will live longer on account of expanded admittance to sufficient lodging, supporting food, and medical services, which is the most clear benefit of a maturing populace.
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