Answer:
boiling
chlorination
Explanation:
Water purification involves eradicating every form of contaminant from water making it fit and healthy for human consumption. Example of this contaminant that may affect humans includes biological contents like bacteria, fungi, germs and parasites, particulate matter, dissolved metals like lead and salt contents. The aim of water purification is to make it free from this contaminants. Water can be purified using various technique like Boiling, filtration, chlorination and distillations. From the question above the two correct method for water purification is Boiling and chlorination.
Boiling is process that involves heating water at a higher temperature. This method is a very good decontamination procedure that lives the water free from contaminants like biological contents . Example are germs and parasites. Most of this organism are microscopic and are very harmful to the human health. At higher temperature most this organism cannot live so boiling is one way to eradicate this organisms.
Chlorination is a disinfecting techniques use in water purification to eradicate organisms that are parasitic, germs and bacteria. In fact chlorination is use to purify water from disease causing organisms. One can use the liquid or solid chlorine to kill bacteria and other life threatening organism.
