The work of urban planners centers mostly on the a. past b. future c. climate d. weather

There are 25 elements found in living things. how many of these elements are found in some organisms but not all? 1 , 6 , 19 , 25

Which technological breakthrough of the 1950s revolutionized the way that americans kept up with news and world events? a) radio b) internet c) television d) motion pictures

Persuaded congress to adopt the missouri compromise in 1820. 1.) henry clay 2.) white southerners 3.) northerners 4.) thomas jefferson