Answer:
Although I am still, in families I run. I continue to live on in a living one. As one continues to draw breath, I will not rust. However, when one stops drawing breath, I will become mere dust. What am I?
People need me, yet they give me away every day. What am I?
What can you break even if you never pick it up or touch it?
I am the beginning of the end and the end of time and space. I am essential to creation and I surround every place.
David's father has three sons: Snap Crackle and ?
Dry though I may be, I am still a sea.