What is Ivan Pavlov most known for? Answers may vary: His experiment in which he trained dogs to salivate at the sound of a bell.

Suppose that you are in a room with 3 doors and a crack in the ceiling for light. that is all. the doors each have a sign on them that says what there is behind them. door #1. a pool of corrosive acid. door #2. a crocodile that hasn't eaten in 8 months. door #3. a solar "oven". a giant lens that focuses all the sunlight at the entrance of the door. you must choose a door, which door do you choose?

Often in bluegrass the mandolin chords are so staccato they sound like drum beats arpeggios bass lines melodies

Choose the word with stronger connotation to repleace the word scared a) terrified b) distressed c) frightened d) worried