Answer:
I am a rock group that has 4 members, all of whom are dead, one of which was assassinated. What am I?
I am a pretty one, fluttering in the pale blue sky. Delicate, fragile on the wing, indeed I am a pretty thing. What am I?
I am a word. I become longer when the third letter is removed. What am I?
I am a nut with a hole. What am I?
I am the reaction after enjoying soda.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.