Answer:

Explanation:
Consider the small sphere radius is x1.
therefore the large sphere radius is 3x1
As we know that volume of sphere=
So ,
Volume of the small sphere
=
also Volume of the large sphere
= 

On solving the equation
volume of large sphere=27 * volume of small sphere
Hence 
Answer:
Suface currents are mostly caused by the wind because it creates friction as it moves over the water. This friction then forces the water to move in a spiral pattern, creating gyres. In the northern hemisphere, gyres move clockwise; while in the southern hemisphere, they spin counterclockwise.
I think it would be one right