Composition of Earth's atmosphere by volume. The lower pie represents the trace gases that together compose about 0.038% of the atmosphere (0.043% with CO2 at 2014 concentration). The numbers are from a variety of years (mainly 1987, with CO2 and methane from 2009) and do not represent any single source.
User: How long did Thoreau live in the woods at Walden Pond? User: How long did Thoreau live in the woods at Walden Pond? Weegy: Thoreau lived in the woods at Walden Pond for two years, two months, and two days.
Henry David Thoreau , ( born July 12 , 1817 , Concord , Massachusetts , U.S. âdied May 6 , 1862 , Concord ) American essayist , poet , and practical philosopher , renowned for having lived the doctrines of Transcendentalism as recorded in his masterwork , Walden ( 1854 ) , and for having been a vigorous advocate of civil liberties , as evidenced in ...