Salt water makes up 97 percent of the earth's waters as 3 percent is only fresh water.
Answer: Option (D)
Explanation: When two oceanic plate moves in opposite direction due to the convection current generated in the mantle, the crust gets thinner and eventually magma comes out to the ocean floor, forming new crust. Due to this divergent movement, a chain of volcanic arc are formed in their vicinity.
For example, the Hawaiian.
Hence the correct answer is option (D).
A megalopolis is A. a large city surrounded by many smaller suburbs.
An example of a megalopolis could be New York - it is a huge urban area which is surrounded by a lot of smaller areas which together make what New York is today.
Chlorine, Oxygen, Bromine and Argon are obviously a gas. The substance that is most likely dense is Silver. Hope this helps.
Local or national ISO I will figure it out