The most important factor that is involved with good health
are those associated with life style because this will affect the person’s life
in terms of his or her health and how he or she will live his or her life,
shape it in order to make him or her live long and happy.
The correct answer is nucleus
Soil develops in horizontal layers.If we cut vertically into the earth ,the different layers become visible.A soil profile is a sample taken from the surface down through the soil . The horizontal layers of soil are called soil Horizons.