Give me food and I will live

Question: Give me food, and I will live. Give me water, and I will die. What am I?

Question: Tear one off and scratch my head. What once was red is black instead. What am I?

Question: What tastes better than it smells?

Question: What goes in the water black and comes out red?

Question: What loses its head in the morning and gets it back at night?

Question: What two things can you never eat for breakfast?