The gray matter of a human brain is made up mostly of neurons' __________, while the white matter of that same brain is made up mostly of neurons' __________

Studies about the effects of pain-relieving drugs on the health of the newborn baby have shown

A) consistent results that such pain-relieving drugs have serious long-term consequences. B) mixed results depending upon the drugs given and the amount administered. C) that the drugs have no significant short- or long-term effect on the newborn. D) uncertain results because it cannot be determined when the newborn's deficits are due to the drugs or genetics.

__________________ theories of decision making were initially developed by economists and mathematicians

a. Normative c. Descriptive b. Analytical d. Market-based