What is a food chain ​

Radiation was first detected by a ?

The war powers act, passed in 1973, was a measure by congress intended to?

Match the following definitions with your vocabulary words. 1. recall; cancel assess 2. to evaluate and set the amount of a tax president pro tempore 3. ruling; overseeing contender 4. a political competitor repeal 5. presiding officer of the senate whenever the vice president is not present consent 6. to agree or accept presiding