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 was born on July 12, 1817, in Concord,Massachusetts. He began writing nature poetry in the 1840s, withpoet Ralph Waldo Emerson as a mentor and friend. In 1 â¦ 845 he beganhis famous two-year stay on Walden Pond, which he wrote about inhis master work, Walden .He also became known for his beliefs in Transcendentalism and civildisobedience, and was a dedicated abolitionist. .