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Hace 4 días · A dietary supplement is a manufactured product intended to supplement a person's diet by taking a pill, capsule, tablet, powder, or liquid. [2] A supplement can provide nutrients either extracted from food sources, or that are synthetic (in order to increase the quantity of their consumption). The classes of nutrient compounds in supplements ...
Hace 2 días · Tuberculosis ( TB ), also known colloquially as the " white death ", or historically as consumption, [7] is an infectious disease usually caused by Mycobacterium tuberculosis (MTB) bacteria. [1] Tuberculosis generally affects the lungs, but it can also affect other parts of the body. [1] Most infections show no symptoms, in which case it is ...
Hace 4 días · Passport. Clockwise, from top left: Dutch ordinary, Nepalese diplomatic, Chinese service, and Polish ordinary passports. A passport is an official travel document issued by a government that certifies a person's identity and nationality for international travel. [1] A passport allows its bearer to enter and temporarily reside in a foreign ...
Hace 4 días · Cattle. Cattle ( Bos taurus) are large, domesticated, bovid ungulates widely kept as livestock. They are prominent modern members of the subfamily Bovinae and the most widespread species of the genus Bos. Mature female cattle are called cows and mature male cattle are bulls.
Hace 1 día · AT&T. AT&T Inc. is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. [4] It is the world's third-largest telecommunications company by revenue and the second-largest wireless carrier in the United States. [5] As of 2023, AT&T was ranked 13th on the Fortune 500 rankings of the ...
Hace 6 días · A protein is a polyamide. Secondary structure: regularly repeating local structures stabilized by hydrogen bonds. The most common examples are the α-helix, β-sheet and turns. Because secondary structures are local, many regions of different secondary structure can be present in the same protein molecule.
Hace 5 días · Cricket is a bat-and-ball game that is played between two teams of eleven players on a field at the centre of which is a 22-yard (20-metre) pitch with a wicket at each end, each comprising two bails balanced on three stumps. Two players from the batting team (the striker and nonstriker) stand in front of either wicket holding bats, with one ...
