If you are buying currency to spend locally then you can convert here easily sterling or dollars for the dirham at the currency exchnge. You cam also use the dollar widely here as we are pegged to the dollar at 3.67 AED to the US $.
Your carbon footprint is basically the sum total of all your actions and decisions and the impact they have on the environment through carbon emissions. How you live, eat, shop and travel all impact the size of your footprint. So now you know the size of your footprint.
The reason we need to save or conserve an ecosystem is because they are all interdependent, if one ecosystem is thrown off balance it causes a domino affect down the food chain/web.e thus need to save the ecosystem that supports us inorder to save ourselves from the damage we did to the environment that gives us our food, clothing and shelter. As Walter Kelly said in the Comic Strip Pogo,  We have met the enemy and he is US ! . Source(s):