Suppose you are an archaeologist trying to answer this question: When did the first people migrate to North America? Why might the answer to this question change over time? What do you think? Check all of the boxes that apply. 1 Scientists might find new sites with human artifacts, thus providing new evidence. 2 Scientist might develop new technology that helps them assign different ages to existing artifacts. 3 Scientists might come up with new theories using existing evidence. 4 Scientists might learn more about the conditions in the world in which prehistoric humans lived.