How to research, plan and write an essay - a 10-step process. Writing an essay, no matter what the topic, is a complex process; it requires a lot of practice, and unfortunately no formula can. guarantee good written work.
It is claimed that the Pueblo Indians and cliff dwellers are identical and that the latter were driven from their peaceful valley homes by a hostile foe to find temporary shelter among the rocks, but such a conclusion seems to be erroneous in view of certain facts.
Some types of carbonate rock underlies topography containing numerous natural depressions, known as sinkholes. The topography is known as karst topography. Limestone and dolomite, both carbonate rocks, are soluble and susceptible to chemical weathering.