pls dont use AI and use a paper;$)(30$ pts$)$

a$)$Please write down the $3$ properties of the nucleation agents in the the glass ceramics. And explain

why we use the nucleation agents in the glass$-$ceramics?

b$)$Please draw the single$-$stage$-$heat treatment of the crystallization graph and draw the nucleation

growth rate versus temperature graph. Explain the this process in detail.

c$)$ Please draw the two$-$stage$-$heat treatment of the crystallization graph and and draw the nucleation

growth rate versus temperature graph. Explain the this process in detail. Explain the this process in

detail.