C lol trying to get points
Answer:Proteins
Explanation:
DNA sequences make up amino acids which will make up proteins.
Answer:
because the germs spread and when other people touch it and are carriers and they will probably get sick too
Explanation:
Answer: skull size of each species
Over time, it is the size of the skull particulary that of the jaw bones, that can help determine the evolutionary relationship of two hominid species. It was believed that the jaws of hominids change as time passes by because the size of the brains changes too.
Answer:
I believe this is a pacemaker. It controls the heart when it starts to fail.
Explanation: