Carbon dioxide sinks Since 1750, continuously increasing anthropogenic CO 2 emissions and land-use change have perturbed the natural carbon cycle. Of the 9.1 Pg C yr −1 (1 Pg C = 1 petagram or ...

Autotrophs participate in the carbon cycle by fixing carbon dioxide to produce the biomass that all other organisms use for life. Four autotrophic carbon-fixation pathways were already known and ...

Plants worldwide are absorbing about 31% more carbon dioxide than scientists previously ... This discovery changes our understanding of Earth's carbon cycle and could reshape climate change ...

meaning it is a key player in Earth’s natural carbon cycle,” commented study co-author and University of Oxford geochemist Robert Hilton. They also compared how much carbon dioxide could be ...