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Human Population and Health Test

Human population refers to the number of people living in a particular area, from a village to the world as a whole. A secondary meaning of population is the inhabitants themselves, but in most uses population means numbers. “Health is a state of complete physical, mental and social well-being and ...

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Pollution and Global Environmental Causes Test

Pollution is anything that makes the earth dirty and unhealthy. Pollution can take the form of chemical substances or energy, such as noise, heat or light. The sum total of all surroundings of a living organism, including natural forces and other living things which are provide conditions for development and ...

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