Cadium, a soft poisonous metal that is used in batteries and in the protective shields in nuclear reactors. It is a chemical element, Magnesium, a common silver-white metal that burns with a bright white flame. It is a chemical element, I class of purity, the cleanest waters, suitable directly for supplying the population with drinking water, living fish poorly resistant to pollution, II class of purity, water that is suitable for recreational purposes and for watering animals,, III class of purity, water suitable for irrigation of fields and industrial purposes that do not require drinking water quality, pesticide, a chemical substance used to kill insects and small animals that destroy crops, agricultural pollution, the top source of contamination in rivers and streams, sewage, the mixture of waste from the human body and used water, that is carried away from houses by pipes under the ground, pollution, the process of making air, water, soil etc dangerously dirty and not suitable for people to use, or the state of being dangerously dirty, radioactive waste, harmful radioactive substances that remain after energy has been produced in a nuclear reactor
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Water pollution
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Zmeczonazyciemm
Technikum
ESL
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