An ovary is the reproductive part of the uterus that produces the egg (ovum) to be fertilized by the sperm
Fossils are the preserved remains, or traces of remains, of ancient animals and plants
Answer: Option A) Parathyroid glands
Explanation:
The Parathyroid gland located in the neck region helps in the secretion of an hormone called Parathormone.
This hormone helps to raise the levels of calcium ions in the body, by preventing the loss of calcium ions through urine, and also preventing excess deposit of calcium ions in the bone, thus regulating bone density.
Child proof means that its child-approved, meaning that its made safe for children.
It is 200 million years because it has been around for a long time.
