20. Cell Membrane 19. Mitochondria 18.<span> Osmosis</span>
Answer:
the third one
Explanation:
physical change is only on looks
Arrow a should point to muscle tissue, arrow B should point to an organ, arrow c should point to organ system.
Water and Oxygen.
Hope this helps; have a great day!
Answer: Genetic Change
Explanation:
Mutations contribute to genetic variation by causing new traits to emerge. Mutations happen when there is a change in the DNA of a creature developing in utero. These random changes in creatures are common, although most mutations end up being lethal or inhibiting to the organism. In rare cases, this mutation can prove benificial or helpful, and if the organism reproduces and the trait is passed along, it could become a new branch of genetic variation within the species.
