Answer:
Homologous
Explanation:
If two or more species share a unique physical feature, such as a complex bone structure or a body plan, they may all have inherited this feature from a common ancestor. Physical features shared due to evolutionary history (a common ancestor) are said to be homologous.
Explanation:
Amino acid is made of an Amino group , a Carboxyl group And an R group . there is also an additional H there .
The answer is amino acid.
<span>Scientists first developed the geologic time scale by studying rock layers and index fossils through out the whole world. With this information, scientists placed Earth's rock layers in order by relative age. Later, radioactive dating helped determine the absolute age of the divisions in the geologic time scale.</span>
