The final treatment of wastewater in the united states normally involves treatment with Chlorine to make it safe.
The final stage of the wastewater treatment process, which is when it is often carried out in most treatment plants, can also include chlorination. The primary goals of this chlorine addition are water disinfection and maintaining chlorine residuals that will stay in the water as it moves through the distribution system.
In the US, wastewater treatment facilities treat over 34 billion gallons of wastewater per day. Human waste, food waste, and some soaps and detergents all contribute nitrogen and phosphorus to wastewater. Once the water has been cleansed to the standards required and observed by state and federal authorities, it is often released into a nearby water body.
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Answer: ryan lived in large cities, had a strong central government, had highly organized society.
Dravidian headed by men, ruled by a chief, had strict social classes
Explanation:
Demography is the statistical study of populations, especially human beings.
The Mayan celebrations involved rituals of bloodletting of choice animals as well as human sacrifice. where people would be killed by having their heart ripped out from the chest.
This was done to appease the gods and it was done in every celebration of every calendar be it political or religious. The most sacred was the tongue and the ear, they pierced the ear to hear from the Gods and cut the tongue to enable them to speak what they heard from Gods.
