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Hace 3 horas · School subject: English as a Second Language (ESL) (1061958) Main content: Verb to be - past simple (2012760) Practice the use of did and didn't. do, does, don't, doesn't English grammar exercises, English lessons for kids, Learn english
Hace 1 día · Nikola Tesla (/ ˈ t ɛ s l ə /; Serbian Cyrillic: Никола Тесла, [nǐkola têsla]; 10 July [O.S. 28 June] 1856 – 7 January 1943) was a Serbian-American inventor, electrical engineer, mechanical engineer, and futurist.He is known for his contributions to the design of the modern alternating current (AC) electricity supply system.. Born and raised in the Austrian Empire, Tesla ...
Hace 1 día · George Washington Carver (c. 1864 – January 5, 1943) was an American agricultural scientist and inventor who promoted alternative crops to cotton and methods to prevent soil depletion. He was one of the most prominent black scientists of the early 20th century. While a professor at Tuskegee Institute, Carver developed techniques to improve types of soils depleted by repeated plantings of cotton.
