At the time of the Missouri Compromise

Sympathetic fibers arise only from the ____ region(s) of the spinal cord.

In the short run, the firm makes zero economic profit when the price is ________ minimum average total cost, makes an economic profit when the price is ________ minimum average total cost, and incurs an economic loss when the price is ________ minimum average total cost.

Marginal cost eventually increases because

Southern paternalism is

The effect of autonomic fibers on target cells is ___, and/whereas the effect of somatic fibers is ___.

If cash flows have one and only one change in sign then they are known as _________________ cash flows.

What effect, if any, would a thicker-than-normal respiratory membrane have on gas exchange? 

The neural control of respiration involves clusters of medullary and pontine neurons. Which one of these control clusters is said to be the rhythm-generating and integrative center, thus largely maintaining the normal rate and rhythm of respiration?

IRR assumed cash flows are reinvested at cost of capital?