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.
Answer:
A
Explanation:
the process involves replication of cell's chromosomes, segregation of the copied DNA and splitting of parent cell's cytoplasm
Answer:
Males defend a large harem of females and will fight with other males to maintain dominance and access to their harem.
Explanation:
In walruses, the male will fight with other males in order to defend its dominance and access to harem. Harem refers to a group of few males and large number of females and their offspring. The male fight with each other in order to mate with the females of the group. The male who wins the fight will be the leader of the group and has the authority to defend his group from predators and mate with the females.
Nuclear work I hope you got it
