You need larger amounts of macrominerals. They include calcium, phosphorus, magnesium, sodium, potassium, chloride and sulfur. You only need small amounts of trace minerals.
The actual meaning of life is to fulfill your purpose in life and accomplish your goals. What I mean by this is, everyone has a purpose, of why they are living. None of us will be here if we all didn't have a purpose
The integumentary system reduces water loss, contains receptors that respond to touch, it regulates body temperature and protects the inside of the body from damage.
Hope this Helps :)
They are in the same periods