Soils develop different horizons due to the amount of weather that is being exposed to each individual layer. What separates one horizon from another is the properties that make up each layer.
Cardiovascular system is also known as the circulatory system.
It's function is to make sure that the circulation of the blood pump by our heart is delivered all throughout our body to be able to give energy and more nutrients that our body needs.
A negative reaction in the body
I hope this somewhat helps you
(Density dependent is the answer)