As this example illustrates, units of matter are organized and integrated into levels of increasing complexity; this is a concept referred to as integrative levels of organization. Integrative ...

Biological diversity, often shortened to biodiversity, is the variation of life at all levels of biological organization, referring not only ... with a popular estimate of somewhere near 13 to 14 ...

The framework of biological stoichiometry stitches together layers of biological organization from genes ... but applies them to many phenomena at all levels of biology, from genes and molecules ...