Lipids are organic macromolecules that serve a variety of purposes. What is the most important role of lipids? A.
to metabolize sugar
B.
to store energy
C.
to build muscles
D.
to oxygenate blood

Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.