Molecular evidence in support of natural selection includes
a. the nearly universal genetic code.
b. the presence of vestigial structures.
c. a tendency toward perfect, unchanging dna in various species.
d. the transmission of acquired characteristics by dna.

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

The cluster of developing cells from conception until birth is called an

When a human or animal consumes food, the carbon in that food is most likely to be converted into which of the following elements? a. carbon remains carbon b. nitrogen c. oxygen d. hydrogen