Landscape Research lists the types of migration as labor, forced, international, internal, voluntary and inter-regional migration. Animals and birds normally migrate due to changes in environmental conditions and the nee... More » World View Social Sciences

The eight types of blood are A negative, A positive, B negative, B positive, AB negative, AB positive, O negative and O positive. The type of blood a person has depends on whether or not two different antigens are presen... More » Science Human Anatomy Blood

Different types of human settlements include hamlets, villages, small towns, large towns, isolated places, cities and conurbations. In some systems, types of human settlements are broken up into urban, suburban and rural... More » World View Social Sciences Anthropology
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The main causes of urban problems include unemployment, rural-urban migration and the embezzlement of funds. These issues lead to different problems in one way or another. More » World View Social Sciences

Unemployment causes widespread poverty, increased crime rates, political instability, exploitation of labor and reduced economic development in the society. Unemployment may also lead to psychological problems, such as m... More » World View Social Sciences

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Polo y servicio was a practice employed by Spanish colonizers for over 250 years that required the forced labor of all Filipino males from 16 to 60 years old for 40-day periods. The workers could be placed on any project... More » World View Social Sciences