Answer: floating (vertebral) ribs
Explanation:
In a typical vertebrae there are 12 pairs of ribs. Each rib is a flattened bone with curvature. These ribs contributes to the wall of the thorax. The last 2 pairs of ribs are not connected with the sternum bone and it's associated cartilage. These ribs are called as the floating ribs. The floating ribs are attached with the vertebral column. These ribs are small and relatively delicate as compared to other pairs of ribs. These ribs include a cartilaginous tip.
The saliva has enzymes that start to break down food using the lock and key system.The teeth chews the food and begins mechanical break down of food
<span>The answer is progesterone. This hormone is important in maintaining pregnancy. It is produced by the ovaries (</span>corpus luteum<span>) in the early stages of pregnancy before the placenta takes over. Progesterone ensures the walls of the uterine remain thickened hence prepare for implantation</span>
Oxygen, liquid water, and life is on planet earth
1. Birth rate, death rate, immigration and emmigration.
2.Logistic growth takes into account carrying capacity.
3. The measure of organisms that make up a population in a defined area.
4. The number or quantity of people or things that can be conveyed or held by a vehicle or container.
5. Food, availability, water supply etc.
