Answer:
Option (D)
Explanation:
Historical geology usually refers to the study of the changes and the variation that occurs at or below the surface of the earth. In simple words, it mainly involves the study of past events. This includes the variation and evolution of different life forms that existed on earth over a time of about 3.8 billion years until the present. It basically comprises the important part of geology namely Paleoclimatology, Paleontology and Paleoseismology. This historical geology is also known as Paleogeology.
Thus, historical geology involves the biological changes that occur over a definite time.
Thus, the correct answer is option (D).
Answer:
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Explanation:
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<span>The question says, 'slum areas, usually called Ashanty towns exist in ................... major African cities, housing .................. percent of urban population. The correct option is B. Slum areas occur in almost all the major African countries, the biggest one in the world is found in Cape town, South Africa. The majority of the slum dwellers are between age 15 and 24. Africans are making efforts to reduce slum areas.</span>