When blood calcium levels drop, glands embedded in the posterior thyroid secrete parathyroid hormone, which stimulates osteoclastic activity. It is made up of parathyroid glands that lie behind the thyroid glands. The reason why it is important because it controls calcium level in the blood and within the bones. It controlled by the low calcium levels in the blood it restorative parathyroid secretion whereas the high calcium levels in the blood stop the release of parathyroid hormone.
Well you should know the Cardiac works the heart so that's not voluntary the smooth muscle is clarly used involuntary, so that would make it the skeletal.
Well, DNA and RNA molecules are both involved in the process of Protein Synthesis whether it be Prokaryotic and or Eukaryotic Protein Synthesis.
Answer:
B because when it hits its carry capacity its survival of the fittest to live
