Which part of immun system is produced by bone marrow and circulates through body to destroy germs

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

Answer! if you don’t mind, can you explain