The moon changes position and goes through cycles.
A: A command economy<span> is one in which a centralized government controls the means of production. ... There are </span>advantages<span> and disadvantages of </span>command economy<span> structures. </span>Command economy advantages<span> include low levels of inequality and unemployment and the common good replacing profit as the primary incentive of production.</span>
Changes in the orbit of the earth caused the ice sheets to spread across Canada.
Not completely sure but logically people go to cities to find jobs :) hope this helps
