I Think The answer is b I hope it helps
I would say that many of our heritable traits are <span>influenced by several genes and by the environnement.
It's, for the biggest part, because of the mutations. You have your heritables traits thanks to your mom and your dad. But a mutation caused by either several rays like ultraviolets or chemicals can changed your traits.
Hope this helps !
Photon</span>
Answer:
I'm pretty sure it's B, pressure.
Explanation:
I hope this helped :)