I probably got something wrong tbh
"C. Organisms' characteristics are carried
<span> on DNA.</span>" would be the best fit, although this still isn't really the core idea behind natural selection, which is that animals survive based on how "fit" they are for their environment.
The process is called digestion
The hormone<span> oxytocin is a positive feedback mechanism that enhances labor contractions. </span>
A small cell is more efficient, when the materials enter the cell, they are more evenly distributed compared to a larger cell.
