Answer:
I start with an E end with an E and have a letter in me.
I begin your sentences.
Only one color, but not one size. Stuck at the bottom, yet easily flies. Present in sun, but not in rain; doing no harm, and feeling no pain. What am I?
I am very afraid of doing scary activities.
I am alive without breath and cold as death. I am never thirsty but always drinking.
Bury deep, Pile on stones, My mind will always Dig up them bones