Polluting environment that has changed. Whether it's changing environment, physical, chemical, or biological in soil or air will also result in harmful organisms or property and all of our human organism unwanted. Whether this change will have the effect, directly or indirectly, of an environment that has elements not suitable for use, but the reverse is toxic or harmful to health or a nuisance to man, such as air, gas is harmful to health, which is contaminated by pollution or energy, which resulted in a social and mental health to deteriorate, causing the human impact, both direct and indirect.
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