The answer to this question is D Eurasia
<u>The correct answers are the following:</u>
- showing the relative strength of different nations’ currencies.
- examining spending patterns across nations and continents.
The exchange rate provides the amount of one currency that has to be provided (price) in order to obtain one unit of a different currency.
Exchange rates are mostly fixed by the forces of supply and demand, hence, depending on consumer needs and preferences and of their relative abudance or scarcity. Threfore, <u>the final exchange rate (price) reached in the market shows the strength of a currency against a foreign one. </u>
Moreover, demand and supply of currencies arise due to international commercial activities that require traders to exchange their money into a different currencies if they want to purchase/sell abroad. Therefore, <u>exchange rates (prices) reached are also dependent on spending patterns in the different countries, </u>more specifically on the streams of exports and imports.
I believe the answer is: a. to enhance credibility
Personal experience would give the readers with a certain level of assurance that the writers at least know what they are talking about.
For example, let's say that there are two authors of a self defense book. The first author has an experience as a president's bodyguard while the second author is a full time web designer. Most people would most likely see the first author as the more credible one.
The water particles had no chemical change, they only changed form. This makes it a physical change.
