Answer:
REM Stage of Sleep
Explanation:
Stage 3 Sleep [ REM Stage ] is the deepest stage of sleep. It is most revitalising & refreshening up sleep. It is crucial to re energise brain.
In this stage : Respiration , heart rate increases, brain activity is high & vivid dreams may occur, body becomes immobile & it is difficult to wake someone up. There are slow delta waves & rapid eye movement.
It is a very short duration (3 - 8% ) of total sleep and its concentration keeps on decreasing with age.
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.
learn more about the treatment of wastewater here:
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<span>he had lots of soldiers and they all defeted the city states and then he was able to build his first empire.i think</span>
Answer:
cohesion, large heat capacity, low density as a solid, and good solvent
Explanation:
Water is a good solvent and is important in dissolving some compounds and changing them into
liquid state.
Water has a large heat capacity which means it can absorb large amount of heat before drying up and this is important in the homeostatic process of plants and animals.
It has a low density as a solid which simply means its solid form isn’t denser and heavy compared to other solids.
It has good cohesive Forces which encourages surface tension. This surface tension prevents the breaking of substances under stress.
Colombia- Juan Manuel Santos
Mexico- <span>Enrique Peña Nieto</span>
Costa Rica- Luis Guillermo Solís
El Salvador- Salvador Sánchez Cerén
