Answer:
Stephen Stearns states that natural selection doesn't mean the survival of the fittest organisms, but rather this mechanism is illustrated by the selective reproduction of the fittest. Natural selection can be classified into distinct types, including directional, disruptive and stabilizing selection, which are in turn based on sexual selection. These types of selection are driven by different outcomes that have different dynamics.
I feel the answer is cell membrane .
The cell membrane is a semipermeable protection and covering for the cell.
Please mark me as brainliest, if this helped.
B. Crystalline structure
C. Types of chemical elements
And
D. Amounts of chemical elements
<h2>Receptors for hearing are in the cochlea; receptors for balance are in the vestibule.</h2>
Hope this will help....
