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Down syndrome or Down's syndrome, [12] also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. [3] It is usually associated with developmental delays, mild to moderate intellectual disability , and characteristic physical features.
Since bumping up against support at 2.75 in mid-September, liquified natural gas price have jumped 18 percent, hitting a high above $3.20 for the first time since February. Prompting this is news ...
Natural gas prices are down nearly 40% year to date amid a glut in supply and a milder-than-expected winter. But analysts see an upside for the commodity going into the end of the year — in part ...
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Water usage is one of the main environmental impacts of electricity generation. [7] All thermal power plants (coal, natural gas, nuclear, geothermal, and biomass) use water as a cooling fluid to drive the thermodynamic cycles that allow electricity to be extracted from heat energy. Solar uses water for cleaning equipment, while hydroelectricity ...
Natural gas burning on a gas stove Burning of natural gas coming out of the ground. Natural gas (also called fossil gas, methane gas, or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane (95%) [1] in addition to various smaller amounts of other higher alkanes.
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Karyotype for trisomy Down syndrome. Notice the three copies of chromosome 21. Trisomy 21 (47,XY,+21) is caused by a meiotic nondisjunction event. [3] A typical gamete (either egg or sperm) has one copy of each chromosome (23 total). When it is combined with a gamete from the other parent during conception, the child has 46 chromosomes.