The process to convert seawater into freshwater is known as
a. salination.
b. desertification.
c. desalination.
d. deforestation.

The process to convert sea water into freshwater is known as desalination. The correct option among all the options given in the question is option "c". It is actually a process by which dissolved salts from water are removed and the water is made fit for drinking purpose. This mechanism is also known as desalting and it is used for variety of applications. This process is also used to make water that is fit for irrigation in places where fresh water is naturally not available.

When the indian plate collided with eurasian plate because it was cool 

Poaching of all these specific species