. Malaria is a disease that is carried by mosquitoes and injected into a person’s bloodstream when they are bitten by the infected mosquito. At first people thought malaria was caused by breathing in the air around swamps. This seemed like a logical conclusion, since people who live near swamps were more likely to contract malaria than people in drier places. What tool could have provided evidence for a more accurate conclusion about the cause of malaria?

So you know what happened and so it doesn’t repeat it’s self

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.