water pollution is the change in the composition and quality of the water, beyond the standard and have an adverse effect on human life and living things. Natural water exists in many different forms: ground water, water in the Lake, river or water exist in the vapor in the air. contaminated water that is part of it exists in other substances, that these substances can be harmful to human beings and living creatures in nature, water pollution is often hard to overcome that to avoid from the beginningin the course of daily activities, people accidentally contaminate water sources with chemical waste from the factory, the factory. the factory smoke factory industrial dust into the air polluting the air, when it rains, the pollution will mingled rainwater also contributed to the pollution of water resources
đang được dịch, vui lòng đợi..