Answer from cs61c-be (Tony Yiu 15099596) for Question 1
An example of temporal locality is like bookstore, electronics stores, etc where they place the most popular items in the front where they are most visible. Because people have been buying them lots (referencing them) it is highly likely that others will buy them too.

Music stores where if you buy an album of an artist and you like it you'll find his other albums close by or on a higher level the entire section yer looking at is the genre of the artist so you might find other artists of similar style you'd enjoy.