Describe the evidence, from studies of both natural and laboratory systems that a) species exhibit small scale variation and/or change over time;
(species; exhibit; small scale variation and/or change over time) Context(species exhibit,List([83, 98))):(species; exhibit change; T:over time)
species exhibit,List([83, 98))
species species
exhibit exhibit change
small scale variation and/or change over time
T:over time