I think the answer is active transport
https://www.youtube.com/watch?v=EmPfjfmw_O8
No, and the environment also adds on to influencing traits.
Hope this helps. If not, I apologize.
The answer to your question is


The lateral line system is found in fish and is used to feel a vibration, movement, and pressure in the water. These senses are derived from the epithelial tissue which reacts to the movement near the fish.
Hope this helps!
Answer:
c.All are halogens, so they are not very chemically active,