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Atmospheric CO 2 concentrations, commonly written "ppm", are measured in parts-per-million by volume . In May 2019, the concentration of CO 2 in the atmosphere reached 415 ppm. The last time when it reached this level was 2.6–5.3 million years ago. Without human intervention, it would be 280 ppm. [38]
Although there are over 50 identifiable hereditary forms of cancer, less than 0.3% of the population are carriers of a cancer-related genetic mutation and these make up less than 3–10% of all cancer cases. [3] The vast majority of cancers are non-hereditary ("sporadic cancers"). Hereditary cancers are primarily caused by an inherited genetic ...
There are many domestic factors affecting the U.S. labor force and employment levels. These include: economic growth; cyclical and structural factors; demographics; education and training; innovation; labor unions; and industry consolidation [2] In addition to macroeconomic and individual firm-related factors, there are individual-related factors that influence the risk of unemployment.
[1] [2] While there are cases in which classifying a "cause" is difficult, or in which "causes" might merge, Aristotle held that his four "causes" provided an analytical scheme of general applicability. [3] Aristotle's word aitia (Greek: αἰτία) has, in philosophical scholarly tradition, been translated as 'cause'.
While pre-tax income is the primary driver of income inequality, the less progressive tax code further increased the share of after-tax income going to the highest income groups. For example, had these tax changes not occurred, the after-tax income share of the top 0.1% would have been approximately 4.5% in 2000 instead of the 7.3% actual figure.
A meta-analysis from November 2020 estimated the basic reproduction number of the virus to be between 2.39 and 3.44. [21] This means each infection from the virus is expected to result in 2.39 to 3.44 new infections when no members of the community are immune and no preventive measures are taken.
G-10 or garolite is a high-pressure fiberglass laminate, a type of composite material. [1] It is created by stacking multiple layers of glass cloth , soaked in epoxy resin, then compressing the resulting material under heat until the epoxy cures.
Functional disorders of the gallbladder, bile duct and pancreas have been defined and classified by the Rome criteria for functional gastrointestinal disorders. [2] The criteria outline three variants of functional disorders of the gallbladder, bile duct and pancreas, termed functional gallbladder disorder, functional biliary sphincter of Oddi disorder and functional pancreatic sphincter of ...