Suppose that you had a very accurate scale that could measure tiny differences in weight. If you took a bar of iron that weighed 45 pounds in your science classroom and weighed it at the top of Mt. Everest, would the bar weigh more than 45 pounds, less than 45 pounds, or exactly 45 pounds? Explain your answer.

(NEED HELP QUICKLY)

(GIVING BRAINLIEST) ​