Answer:
I mirror your actions.
I am a rock group with four members all of whom died in plane crashes. Who am I?
Everyone in the world needs me. They generously give me but never take me. What am I?
I cannot be felt seen or touched. Yet I can be found in everybody. My existence is always in debate. Yet I have my own style of music.
I am black, white, and read all over. What am I?
I break away from my pack. I create holes in my victims. I can travel for miles and then disappear. I am part of a dying breed. What am I?