Answer: provides a water source for an oasis
Explanation:
Answer:
false
Explanation:
light years is used to measure speed in space, to see how long it takes to get to one planet to another.
The first portion of the galaxy was the halo.
I hope this helps.
Well if you mean what does the controlled part of a scientific investigation, it is the part of the investigation that will be your control or your base, untouched, original, data and such.