Trees spit out gas from soil microbes.
Mascarelli
Amanda
A
D000332:Aerobiosis; D000693:Anaerobiosis; D001272:Atmosphere / Q000032:analysis / Q000737:chemistry; D001692:Biological Transport; D055868:Floods; D005740:Gases / Q000378:metabolism*; D017752:Greenhouse Effect; D008697:Methane / Q000378:metabolism*; D012987:Soil; D012988:Soil Microbiology; D014197:Trees / Q000378:metabolism* / Q000382:microbiology* / Q000528:radiation effects
D005740:Gases; D012987:Soil; D008697:Methane