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.
After my fellowship of toil and impracticable schemes with the dreamy brethren of Brook Farm; after living for three years within the subtle influence of an intellect like Emerson's; after those wild, free days on the Assabeth, indulging fantastic speculations, beside our fire of fallen boughs, with Ellery Channing; after talking with Thoreau about pine-trees and Indian relics in his hermitage at Walden; after growing fastidious by sympathy with the classic refinement of Hillard's culture ...