What discovery supports the hypothesis that RNA was the genetic material in the earliest organisms?
a. Ribozymes are RNA that can self-replicate,
b. DNA does not require enzymes to replicate.
c. RNA stores genetic information on ribozymes.
d. Chains of RNA will form lipid membranes.

carbohydrates are the body's preferred source of energy.

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

the denominator has a very specific role.