Music, language, and the brain

[摘要] Terrestrial vegetation produces copious quantities of hydrocarbons and other volatile organic compounds (VOCs) that dominate global gas emissions. The largest component of emissions from vegetation is the hydrocarbon isoprene. Isoprene emissions in pristine environments has the ability of atmospheric oxidants to remove 'greenhouse' gases (such as methane) and toxic gases (such as carbon monoxide). In a polluted atmosphere, isoprene emissions can substantially increase the amount of smog and isoprene emitted by terrestrial ecosystems into unpolluted atmospheres is deleterious only when it comes into contact with air tainted by human activities.