carbon sink

A reservoir which absorbs carbon (C), generally in the form of carbon dioxide (CO2). Natural sinks include the atmosphere and oceans, marine and terrestrial biomass, and soil organic matter including peat.

acidification of the oceans,
biomass,
carbon,
carbon dioxide,
carbon source,
peat,
soil organic matter

This definition is abridged from A – Z of tree terms: A companion to British arboriculture.
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