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The Delta variant (B.1.617.2) was [3] [4] a variant of SARS-CoV-2, the virus that causes COVID-19. It was first detected in India on 5 October 2020. The Delta variant was named on 31 May 2021 and had spread to over 179 countries by 22 November 2021.
The Sacramento–San Joaquin River Delta, or California Delta, is an expansive inland river delta and estuary in Northern California. The Delta is formed at the western edge of the Central Valley by the confluence of the Sacramento and San Joaquin rivers and lies just east of where the rivers enter Suisun Bay , which flows into San Francisco ...
Kamala Devi Harris (/ ˈ k ɑː m ə l ə ˈ d eɪ v i / ⓘ KAH-mə-lə DAY-vee [1]) (born October 20, 1964) is an American politician and attorney who has been the 49th and current vice president of the United States since 2021, serving with President Joe Biden.
Satellite image of Okavango Delta, with national borders added Typical region in the Okavango Delta, with free canals and lakes, swamps and islandsThe Okavango Delta [2] (or Okavango Grassland; formerly spelled "Okovango" or "Okovanggo") in Botswana is a vast inland delta formed where the Okavango River reaches a tectonic trough at an altitude of 930–1,000 m [3] in the central part of the ...
1. The Maringouin delta formed 7,500 to 5,500 years ago when relative sea level rapidly rose. [6] 2. The Teche delta formed 5,500 to 3,500 years ago after relative sea level rise decelerated. [6] 3. The St. Bernard delta formed 4,000 to 2,000 years ago following an avulsion that caused the river's relocation to the east of present-day New ...
Delta Delta Delta (ΔΔΔ), also known as Tri Delta, is a global [1] women's fraternity and Greek life organization founded on November 27, 1888 at Boston University. With over 200,000 living initiates at 141 chapters and over $450M assets under management, Tri Delta is one of the largest National Panhellenic Conference Greek-letter societies.
Space Delta 2 (DEL 2) is the United States Space Force's space domain awareness and space battle management [2] delta and is headquartered at Peterson Space Force Base, Colorado. Space Delta 2 tracks and monitors all human made objects from low Earth orbit to geosynchronous orbit and further out to deep space .
Delta-v (also known as "change in velocity"), symbolized as and pronounced deltah-vee, as used in spacecraft flight dynamics, is a measure of the impulse per unit of spacecraft mass that is needed to perform a maneuver such as launching from or landing on a planet or moon, or an in-space orbital maneuver.