When your body temperature is too high your blood vessels will dilate then your sweat glands secrete fluid and the heat is lost from the body.. there for without sweat you would “heat to death”
In order to study the formation of cancer cells, you should study the life cycle of normal cells as cancer cells are abnormal cells.
Actually, Normal cells grow, divides and died after an interval of time. And when this process is break down, cancer cells begin to form. They are usually old cells which don't die after their life cycle.
Hope this helps!
They break down nutrients, making them available for use
A group of individuals of the same species that interact will find a mate and cross breed and produce a stronger species to survive they're environment. per Darwin's law..