A group of two or more atoms that acts as a single atom and goes through a reaction unchanged. In living systems, oxygen radicals are very destructive.
Material containing one or more types of radioactive atoms. Molecules that are radiolabelled are sometimes called tracers, as they allow one to track the various biochemical pathways that a molecule follows during metabolism.
Birds of prey that live on other birds and animals.
Resistant to decomposition.
The cellular process by which sugars and other organic compounds are broken down to release stored energy and to obtain carbon skeletons used in the growth and maintenance of the cell.
A rootlike stem that grows horizontally under or along the ground that sends out roots from its lower surface and leafy shoots from its upper surface.
An area of soil typically within 1.5 mm of plant roots characterized by heightened biological activity and chemical weathering of minerals.
Roman Warm Period
The period between the 5th century B.C. and the 1st century A.D. when global temperatures were warmer than present.
Small molecules that are released from plant roots, which include sugars, amino acids, organic acids and amides. These molecules influence soil nutrient availability both directly and indirectly by stimulating the activities of certain microbial and fungal components of the soil biota.
Leaves arranged in a circular cluster resembling or suggesting the arrangement of the petals of a rose.