Answer:
The rock cycle and plate tectonics cause Earth's rocks to break down over time and they are recycled through natural processes.
Explanation:
Rock cycle(Attachment-1)
Polar bonds are formed between atoms of different electronegativities.
The solution process is exothermic because when solution become colder heat energy is released which make the process exothermic. The exothermic process is the process in which heat is released.The solution forms inorder to separate NH4+ ions and Cl- ions