The layer of the earth where mantle convection occurs and on which the earth's crust rests is the
outer core
asthenosphere
lithosphere
inner core

barack obama

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answerlong term orientation;

a family can go through many changes which would make it complex. having children can cause a change and increase the complexity. this would change the distribution of authority and management, as the older siblings will at some point be in charge of the younger ones, and discipline must be distributed when they get in trouble.