____ are both examples of cooperative contracts.

Incidents of basque violence are caused by their desire for _____.

The ""theoretical"" price of one beer _______ for a second or subsequent dui.

The first officials of sporting events were __________.

The mental operation of ___________ governs what we do, how we do it, and how quickly we do it.

The pattern of yellow lines on the roadway determines whether __________ is permitted.

An image is _____

Theme is not __________.

Utilizing ultisols for agriculture requires _______.

Until the early _______ there were only negligible amounts of free oxygen in the atmosphere.

The energy that warms earth's surface comes primarily in the form of __________.