By the 12th grade, students understand that organisms are well-suited to survive in particular environments.
(organisms; to survive; L:in particular environments) (students; understand; that organisms are well-suited to survive in particular environments) Context(students understand,List([19, 38))):(organisms; are; well-suited to survive in particular environments)
students understand,List([19, 38))
organisms students organisms
to survive understand are
L:in particular environments
that organisms are well-suited to survive in particular environments
well-suited to survive in particular environments