A Syncline is the downward arc (concave downward) which looks like a curve of a fold.
An Anticline is a fold that is convex upward. Ridge and valley province is a physiographic province that is a series of both synclines and anticlines in the northeast-southwest of the mainland
This Syncline, Anticline, Ridge, and Valley province are formed when tectonic plates are moved or collied or compressed by each other on the earth's crust. This results in the formation of different main lands on the earth.
The Valley and Ridge province was the perfect example of a syncline and anticline or plate tectonic collision of two continents in the Paleozoic Age. Near Africa and North America.
The Ridge and valley province is a part of The Appalachian Mountain range in the United states.
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Sea level is generally used to refer to mean sea level (MSL), an average level for the surface of one or more of Earth's oceans from which heights such as elevations may be measured. MSL is a type of vertical datum – a standardised geodetic reference point – that is used, for example, as a chart datum in cartography and marine navigation, or, in aviation, as the standard sea level at which atmospheric pressure is measured in order tocalibrate altitude and, consequently, aircraft flight levels. A common and relatively straightforward mean sea-level standard is the midpoint between a mean low and mean high tide at a particular location.
Sea levels can be affected by many factors and are known to have varied greatly over geological time scales. The careful measurement of variations in MSL can offer insights into ongoing climate change, and sea level risehas been widely quoted as evidence of ongoing global warming.
The term above sea level generally refers to above mean sea level (AMSL).
<span>The President relies on his cabinet and also the National Security Council for day to day advise while governing. The cabinet consists of the heads of major departments such as the Department of Defense and the Department of State. </span>
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<span>"Prime meridian" marks the beginning of longitude.And goes east and west around the equator with 180 (the middle) being in the middle of the ocean.</span>