A bone cell, formed when an osteoblast becomes embedded in the matrix it has secreted.
I think its called the <span>doldrums. I had a friend who lived in Africa on the equator and i remember her mentioning this (this was also in 2007, so dont quote me here lol)
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The answer is; desertification
Topsoil is usually the riches soil in terms of nutrient is important in support of plant vegetation. It is rich because it contains humus and other decomposed materials that recycle nutrients. When the topsoil is washed away, the local region becomes barren in that it cannot support vegetation. This causes the area to turn into a desert.
C, if you look at a water wheel, water flows on the wheel, turning a rod, powering something on the inside. Dams do the same thing except the rod goes into a transformer and is more complicated.
