Who should witness a case of mustard gas poisoning?

Space is not completely empty. there are small particles in space. what happens when these particles come together?

Considering the case of the two health clinics above, why do you think that trouble was brewing? there was serious competition for tech jobs at the downtown clinic. the new technology at the uptown clinic was too difficult for the staff to understand. the doctors pitted the staff of one clinic against the staff at other clinic. the staff at the downtown clinic saw that their colleagues at the uptown clinic were treated better and had more opportunity.

Who introduced arabic numerals to italy, which make bookkeeping possible? a. brunelleschi b. cosimo de medici c. fibonacci d. gregory xi e. giovanni de bicci de medici