Answer:
Natural selection.
Explanation:
Natural selection is when organisms who are most adapted to their environment survive and pass on their genes while those with "unfit" genes die and don't get the chance to reproduce! This slowly creates a population that is most well suited to their habitat. Hope this helps again LOL! :)
Answer:
esophagus
Explanation:
the esophagus is the pipe/muscle that leads to your stomach
Answer:
communication is not the function of skeletal system