Under which circumstance does the fda allow verbal consent prior to participation in a research study?

Which type of market produces the highest level of output at the lowest price to consumers?

Which of the following might cause the inflation rate to spike up sharply? the purchasing power of the average consumer decreases due to a sluggish economy. plentiful rainfall and moderate temperatures result in good harvests of wheat and soybeans. the items in the cpi market basket change to account for changing consumer buying habits. prices on world oil markets rise steeply due to war in the middle east.

What was a common feature of civilizations in both mesoamerica and south america during the classical era