It would be C, by their composition and texture.
<span> c. coal is too large to power cell work </span>
They contain different cell receptors and communication pathways
Answer:
It encourages the growth of a group of certain bacteria while inhibiting the growth of others. It contains a high concentration (~7.5%-10%) of salt (NaCl), making it selective for gram positive bacteria Staphylococci (and Micrococcaceae) since this level of NaCl is inhibitory to most other bacteria.
Explanation: