How many gallons of water does it take to make a hamburger?

Well, this is a pretty interesting question. The cow that was used to make the burger(more specifically, say, 1 pound of beef) is typically about 1800 gallons. This water includes the water used to grow the food (for the cow) and the water that was drunk by the cow.

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.