According to the combined theory of color vision, evidence of the trichromatic theory occurs at the level of the , while evidence for the opponent process theory occurs at the level of the .

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.

Joke: i thought it said drake and josh at first answer: probably unsure about this law. depending on how long the time is.