Urban people change their environment through their consumption of food, energy, water, and land. And in turn, the polluted urban environment affects the health and quality of life of the urban population. ... For example, urban populations consume much more food, energy, and durable goods than rural populations.
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adrenaline is the hormone which is directly controlled by nervous system
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4. p.complement system c.saliva b.sneezing
A phase change is when matter changes into another form but keeps its properties
