Words printed in heavy type above an article or story that tell the title of an article is called the

Correct my question my english is not good: “what the effect and the effectiveness of strength exercise in breast cancer medication related to lymphedema? ”

During an experiment measuring the change in temperature of a chemical reaction your digital thermometer breaks. you have the same model thermometer available to use how do you proceed with the experiment a. continue on with the new thermometer b. begin the experiment again with the new thermometer c. calibrate the new thermometer and make a notation regarding the change in equipment d. calibrate the new thermometer and begin the experiment again

Do postcards have any value?and explain