Which group of elements are present in all macromolecules in living things? (8.9A)
C, H, P, N
C, H, O
Na, CI, O
OS S. P, C, O

The four main classes of organic compounds (carbohydrates, lipids, proteins, and nucleic acids) that are essential to the proper functioning of all living things are known as polymers or macromolecules. All of these compounds are built primarily of carbon, hydrogen, and oxygen but in different ratios.

Explanation:

d. groundwater flows through the subsoil and deposits minerals.