Rivers usually empty into oceans. Any pollution deposited or pick-up by the river, will eventually end up in the ocean.
Blood type O can be given to anyone.
It may or may not turn acidic depending on the area or time of the year it is.
Longest to Shortest:
<span>across the diameter of the galactic halo - 200,000 light years
</span><span>across the diameter of the galactic disk - 100,000 light years
</span><span>from the sun to the center of the galaxy - 26,000 light years
</span><span>across the diameter of the central buldge - 20,000 light years
</span><span>through the disk from top to bottom - 1,000 light years.</span>
