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Increased surface area can also lead to biological problems. More contact with the environment through the surface of a cell or an organ (relative to its volume) increases loss of water and dissolved substances. High surface area to volume ratios also present problems of temperature control in unfavorable environments. [citation needed]
4.7 to 6.1 million (male), 4.2 to 5.4 million (female) erythrocytes: [13] Red blood cells contain the blood's hemoglobin and distribute oxygen.
Example of a copper alloy object: a Neo-Sumerian "Foundation Nail" of Gudea, circa 2100 BC, made in the lost-wax cast method, overall: 17.5 x 4.5 x 7.3 cm, probably from modern-day Iraq, now in the Cleveland Museum of Art (Cleveland, Ohio, USA)
Barbara and Kara answer in Diana's absence, and Tatsu sneaks them onto campus while warning them not to run afoul of the strict headmaster, Mr. McDougal. A female spirit has been roaming the dormitories at night and stealing items from the students' rooms; Tatsu has dubbed her the "Silver Banshee" and is determined to stop her. The three girls ...
While on the board, she led efforts to remove toll booths on parts of the New York State Thruway system. [17] [18] In May 2003, Erie County Clerk David Swarts appointed Hochul as his deputy. [8] [13] Governor Eliot Spitzer named Swarts to his administration in January 2007 and appointed Hochul to succeed Swarts as county clerk in April 2007. [15]
Depleted uranium (DU; also referred to in the past as Q-metal, depletalloy or D-38) is uranium with a lower content of the fissile isotope 235 U than natural uranium. [2] The less radioactive and non-fissile 238 U is the main component of depleted uranium.
Flag of World Health Organization featuring Rod of Asclepius, a common symbol for medicine and health care. Medicine is the science [1] and practice [2] of caring for patients, managing the diagnosis, prognosis, prevention, treatment, palliation of their injury or disease, and promoting their health.
A complete blood type would describe each of the 45 blood groups, and an individual's blood type is one of many possible combinations of blood-group antigens. [3] Almost always, an individual has the same blood group for life, but very rarely an individual's blood type changes through addition or suppression of an antigen in infection, malignancy, or autoimmune disease.