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C 4 carbon fixation or the Hatch–Slack pathway is one of three known photosynthetic processes of carbon fixation in plants. It owes the names to the 1960s discovery by Marshall Davidson Hatch and Charles Roger Slack. [1] C 4 fixation is an addition to the ancestral and more common C 3 carbon fixation.
The pineapple is an example of a CAM plant.. Crassulacean acid metabolism, also known as CAM photosynthesis, is a carbon fixation pathway that evolved in some plants as an adaptation to arid conditions [1] that allows a plant to photosynthesize during the day, but only exchange gases at night.
The Hatch Act of 1939, An Act to Prevent Pernicious Political Activities, is a United States federal law that prohibits civil-service employees in the executive branch of the federal government, [2] except the president and vice president, [3] from engaging in some forms of political activity. It became law on August 2, 1939.
Charles Roger Slack FRS FRSNZ (22 April 1937 – 24 October 2016) was a British-born plant biologist and biochemist who lived and worked in Australia (1962–1970) and New Zealand (1970–2000). In 1966, jointly with Marshall Hatch , he discovered C4 photosynthesis (also known as the Hatch Slack Pathway).
Karine Jean-Pierre and Andrew Bates took actions that were "contrary" to guidance on complying with a law designed to limit how officials engage in elections, the U.S. Office of Special Counsel said.
Advanced Placement (AP) United States Government and Politics (often shortened to AP Gov or AP GoPo and sometimes referred to as AP American Government or simply AP Government) is a college-level course and examination offered to high school students through the College Board's Advanced Placement Program.
The "Diagram of the Federal Government and American Union" of 1861, and; The "Diagram of the Federal Government, Or the Great Republic of the United States of America" from 1864. The map was lithographed by Ehrgott, Forbriger & Co., a manufacturer of American Civil War lithography portraits and other documents, such as diplomas and maps.
Marshall (Hal) Davidson Hatch AM (born 24 December 1932) was an Australian biochemist and plant physiologist. He was the chief research scientist at the CSIRO Division of Plant Industry in Canberra .