If a person chooses self-sufficiency, then she can only consume what she produces

An effective price ceiling tends to

A) increase quantity supplied. B) decrease quantity demanded. C) leave quantity supplied and demanded unchanged. D) do none of the above.

While some economists argue that population growth reduces __________ ?growth, others contend that the opposite is true. The latter economists consequently believe that immigration should be encouraged rather than discouraged.

Fill in the blank(s) with the appropriate word(s).