How would working in a factory like the highland park plant be dangerous?

According to ohrp, a problem is an “unanticipated problem” when it meets which of the following criteria: unexpected, related or possibly related to the research, suggests that the research does not put the subjects or others at greater riskunexpected, related or possible related to the research, suggests the research puts subjects or others at greater riskunexpected, unrelated to the research but still occurring with a subject, suggests the research puts others at greater riskexpected, related or possible related to the research, suggests the research puts others at greater risk

What happens after a star goes supernova? just wondering! [tex]supernova [/tex] answer asap i really wanna know!

How did ancient civilizations develope its agriculture and protect its population