Overview. A Power of Attorney (POA) is a legal way to have a person act on your behalf. The POA gives someone else the right to act on your behalf on matters that you list in the POA. If you are the person that gives the authority to someone to act on your behalf, then you are the principal.
The prefix tropo-denoting turning, a change, is derived from the Greek word tropos, a turning. The troposphere is the lowest level of atmosphere in which the temperature fall â¦ s as height increases.ropo-comes from the Greek tropos which means turning.. Meso-comes from the Greek mesos which means middle.. Thermo-comes from the Greek thermos which means hot.. Exo- â¦ comes from the Greek exÅ which means outside..
The troposphere is denser than the layers of the atmosphere above it (because of the weight compressing it), and it contains up to 75% of the mass of the atmosphere. It is primarily composed of nitrogen (78%) and oxygen (21%) with only small concentrations of other trace gases.early all atmospheric water vapour or moisture is found in the troposphere. The troposphere is the layer where most of the world's weather takes place. Since temperature decreases with altitude in the troposphere, warm air near the surface of the Earth can readily rise, being less dense than the colder air above it.