Answer:
In my life I must bare my bloodline I must share.
I always murmur but never talk. Always run but never walk. I have a bed but never sleep, have a mouth but never speak. What am I?
I bring light to a dark world. In a current I travel and through tunnels I am hurled. Touch me and I'll kill you. What am I?
I go through a door but never go in, and never come out. What am I?
Use me to reward good behavior.
What is yellow, looks like the moon and has seeds?