Good Riddles

Question: I always listen to my Master, I never disobey. From my path I never stray to destroy what's in my way. What am I?

Question: What are the cleverest bees?

Question: The sky is blue, the sea is green. The answer never ends in-between.

Question: I am both black and white. I go with the flow and my loyalty never wavers.

Question: Find the five digit number in which the first digit is one half of the the 4 fourth digit, the second digit is one fourth of the last digit, the fourth digit is 3 times the second digit, and the third digit is the first digit plus 4.