Is it safe to swim in a canal?

Name something that's usually more expensive to buy in a tourist city? What is the straightest thing in the world? What is a sentence for forest? What is the distance between Gibraltar to the African main land? Where would you find a gyre? How many cities in the US are named Ocean City? How many states have a desert? What is the country that is home to the worlds second longest river and largest tropical rain forest? Did the Titanic get pull out of the ocean? What is the leading theory on the Stonehenge was built? If water had a lower specific heat capacity would lakes be more likely or less likely to freeze in winter? What does the tributary do in a river? How do people get transported to the statue of liberty? How much does it cost for advertising posters? Which country has the least tourism? The Great Barrier Reef is about the same size of which country? What direction do the 10 longest rivers of the world head to-north east south west? Is husten bay a ocean? Is Ibuprofen good for toothaches? What kind of plants are found in the Kara Kum Desert?