4 is B. It wasn't in the genes to get short wings.
5 is C. It should be natural selection but adaptation is another way to say ns.
Answer:
Taking nutrients from the dermal papilla, the hair bulb generates new hair cells. As these cells move up through the hair root, they mature through a process called keratinization, fill with fibrous protein and lose their nucleus.
Explanation:
I found this on the internet and don't know if it is correct but if it is can I get a brainliest please?
Answer:
Pacemaker cells are located in the <u>sinoatrial node.</u>
Contractile cells are located in the <u>Heart</u>
Explanation:
Answer:
I guess membrane is answer
