Which type of rock forms because of high heat and pressure without melting ?

The correct answer is a.

Bi think tell me if i’m wrong

The oldest is  found in the  west pacific and north-west atlantic. 

It has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient. i hope it you.