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 ...

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 ...

Dead organisms are broken down into smaller pieces by the process of decay. Organisms such as earthworms are involved in this process.

A study from the U.S. Geological Survey found the ecosystems on California's public lands are losing the carbon they've ...

Key takeawaysGlobally, over 600 million people are infected with the skin-penetrating threadworm, Strongyloides stercoralis, mostly in tropical and ...

Human activities have been the main cause of rising carbon dioxide levels in our atmosphere since the 1800s. The emergence of life on our planet added a new layer to the carbon cycle. As plants grow, ...

Carbon dioxide also dissolves in seawater ... seagrasses and other forms of sea life interact sheds light on Earth’s carbon cycle. Carbon, a chemical element, is found in all organic matter ...

Globally, over 600 million people are infected with the skin-penetrating threadworm, Strongyloides stercoralis, mostly in tropical and subtropical regions with poor sanitation infrastructure.

the process green plants use sunlight to absorb nutrients from carbon dioxide and water. This cycle therefore steadily speeds up oxygen production over the passage of Earth's history. The research ...