Aheterogeneous mixture is a

a. component added to sand that makes it inseparable.
b. mixture in which its components can't be separated.
c. mixture in which its components retain their identity.
d. mixture that always contains water.

A heterogeneous mixture is a mixture in which its components retain their identity (texture, surface tension, etc.)

Absolute

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.