___ are categorized by structure and function; ___ are categorized by their support roles. Dendrites; axons
Cell bodies; myelin
Neurons; glia
Afferent cells; Efferent cells

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.

answerconditioned response;

e2020 answer: spores

pteridophytes

bryophytes

nonvascular

vascular