The major cause of global warming is the release of __________ into the atmosphere

In recent decades, party identification among American voters has ______.

a. increased, but only for Democrats b. become considerably stronger, especially for Republicans c. moved away from the two main parties to third parties d. generally decreased e. increased for both major parties

What provides basic data on labor force activity monthly?

A. the CPS B. IPUMS C. the ICPSR D. the CSC