Sphere two poles is called the axis of rotation. Circles on the sphere that are parallel to the equator are lines of latitude. This terminology is also used for such approximately spheroidal astronomical bodies as the planet Earth (see geoid). Any plane that includes the center of a sphere divides it into two equal hemispheres. Any two intersecting planes that include the center of a sphere subdivide the sphere into four lunes or biangles, the vertices of which all coincide with the antipodal points lying on the line of intersection of the planes. The antipodal quotient of the sphere is the
Core sphere approximately 30% of the total product. Long before the Industrial Revolution, the core sphere was the entire economy. Families and communities provided for themselves by hunting and gathering. Then with industrialization came a market of competitive men working for wages and along with it what historians call the cult of domesticity. The core sphere became regarded not as part of the market sphere of the economy but more as emotional and altruistic behavior. Therefore, activities in the core sphere were not considered economic because they do not directly influence the market economy. As time has progressed towards the present, organizations