Based on your knowledge of scientific laws and theories, which of the following is true? A theory can turn into a law with more scientific evidence. A theory is an explanation for a broader concept than a law. A theory can never change, while a law changes often. A theory is supported by a single researcher, and laws must be supported by separate groups of researchers.

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.