Five-year-old Trevor has learned that loud thunder usually comes after a bolt of lightning. As soon as he sees the lightning, he covers his ears to avoid the loud noise the thunder makes. According to the two-factor theory of avoidance learning, covering Trevor's ears is reinforced because:

How did the romanov dynasty increase russia's power? need many details, you!

When constance visited lookout mountain, what region was she seeing?

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