Answer:
D it causes river channels to change shape
The area In Latin America that is actually common wealth of the United States is puerto rico
Since this is a square you can set 3x+20=5x then you can solve for x.
Subtract 3x from both sides:
3x-3x+20=5x-3x
20=2x
Divide both sides by 2
20/2=2x/2
10=x
Hope this helps.
330 million, 500 million, 20K meters squated, dont get the last 2.
A dolphin is sort of large, hope it hepls