They really help in the process of Africa's state building, creating commercial networks between parts of the continent, and introducing literacy ( especially on northern part of Africa)
They also controlled the sea route between Asia and Africa and managed to maintain the relationship between Africa and the middle east
Water heat at a different rate than land because water has a higher capacity for storing heat than does land surfaces.Hope this helps !
The correct answer is - a. having differences.
The term heterogeneous is a term used to describe something that is different, that is not the same, or that there's multiple different things. This term can be used for various different things, including human societies, geography, biodiversity, etc.
In the human society, heterogeneous, is used as term when there's societies where multiple different ethnic groups live in a same area, or different racial groups, it may also be used in a manner of representation of the sexes in a particular filed or job, even the architecture and the infrastructure.
Answer:
A North American Union, by EU's example, would mean that the US, Canada, and Mexico will function as one in many ways. The borders will be open, both for economic actions and for free movement of people. While this may seem good at first sight, it will actually cause some major problems as well. The US and Canada will face a major population increase in a very short period of time. The people from Mexico will rush to move into these two countries because of better living conditions and more job opportunities, which in turn will cause massive depopulation in Mexico. On one side, Mexico will face major economic problems because of a sharp decline in its labor force, while on another side, the people in the US and Canada will face problems because there will be tens of millions of new laborers that will offer their services for lower wages. This will lead to tens of millions of people losing their jobs or not being able to find j
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