$/$PelourinhoExplain why it often tak es weeks or even longer to

identify the source of contaminated food.

$4-36.$ Describe th e problem s a restaurant or grocer faces

when consumers suffer from foodborne illness.

$4-37.$ How do es blockchain technology h e lp impro ve

food safety?

$4-38.$ Why is transpa re ncy in the food supply chain im$-$

portant, and how does blockchain s upport it$?$