Answer:
Homeostasis
Explanation:
Living systems will always try to maintain homeostasis: a steady state of all internal and external conditions.
This includes body temperature and fluid balance.
Shivering and getting goosebumps are attempts the body makes to warm itself up, which means it is trying to maintain homeostasis.
A)2 sodium atom and 1 oxygen atom
Brain patterns
"The ciliary body is a circular structure that is an extension of the iris, the colored part of the eye."
It's bases of an object's position