Of these statements best describes a theory?

a-it is a well supported description.
b-it is a well supported explanation.
c-it is not supported by data.
d-it is not supported by observations.

The use of dna as evidence in criminal investigations became possible because of the

Aristotle classified animals according to their a. habitat and mating behavior c. mating behavior and relatedness b. habitat and physical differences d. physical differences and mating behavior

Select the correct answer. which statement applies only to the axial skeleton, not the appendicular skeleton? a. it contains a pivot joint. b. it has muscles attached that work in pairs. c. it contains red bone marrow. d. it possesses fossa for bone articulation. e. it protects the heart and lungs.