<span>Hippocrates believed that there are four humors in human body which need balance for a healthy being. These were:
Blood, phlegm, yellow bile, and black bile.</span>
Galen expanded the idea of the humors and introduced four temperaments which were these:
choleric (hot / dry), melancholic (cold / dry), sanguine (warm / moist), and phlegmatic (cold / moist).
Another expansion Galen did was that he gave each humor/temperament physical and psychological qualities and said that even the food items have an association with the certain humor, those foods can effect certain humor in certain ways.
Hydroxyapatite is the major component of bone that contributes to its hardness.
Mitosis is the process by which a parent cell divides into two daughter cells that are genetically identical to each other and to the parent cell. The parent cell of 10 chromosomes will end up becoming two daughter cells that each have a copy of those 10 chromosomes.
Hope this helps! :)
That element is <span>Nitrogen.</span>
By pushing on the top of it and the water or substance will get into it