A central carbon atom bonded to an amino acid group and an R group.
PCR allows for the analysis of DNA fragments through the comparison of the base pairs each molecule contains, which can then be used for genetic screening and the identification of individuals and DNA fragments
Answer:
3 1 2
Explanation:
simple organisms apeared first insects would be less complicated than fish the came sharks as they are more complex organisms also insects were first to be food for fish and fish food for sharks
Abiotic is non living things. So I would think it would be D. All of the above
