Which of the following does not provide evi-
dence that living things have been evolving for
millions of years?
(a) fossil record
(b) natural variation within a species
(c) geographical distribution of living things
(d) homologous structures of living organisms
(e) similarities in embryological development

(B) natural variation within a species

Explanation:

Natural variation within a species only shows the differences among organisms within a species and therefore it isn't a piece of evidence that indicates evolution has occurred. Moreover, the geographical distribution of living things, fossil records, homologous structures of living organisms, and similarities in embryological development are all pieces of evidence which corroborate the theory of evolution.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

not sure if this what   you'r looking for would be percent composition