1. Do you know what water pollution is? Do you know that the water we use everyday is not as clean as we think? Water pollution is a problem that we need to pay attention to. Now, let's talk about the causes and effects of water pollution. The major cause of water pollution is sewage. Sewage contains various kinds of germs and viruses, which can make people sick. Another cause of water pollution is industrial waste. Factories produce a lot of waste every day. They dump the waste into rivers directly or indirectly. There are many effects of water pollution. First, it does harm to our health. Some people may get sick because they drink polluted water. Second, it contaminates the environment and destroys nature. Some animals may die because they do not have enough clean water to drink and some plants cannot grow well in polluted soil. Third, it affects the economy since many people will lose their jobs when factories close due to lack of clean water for production purposes.

2. Scotland is a country of many legends. In the past, people believed in magical creatures and mystical beings. Today, many are skeptical about these stories, but they still attract a lot of attention. In this article, we will share some of the most popular Scottish legends with you. The Kelpie is a creature that lives in lochs (lakes). It usually appears as a little horse or pony that wanders the shoreline, tempting children to climb on its back. If someone falls for this trick, the Kelpie takes them into the water and drowns them. Sometimes it can also transform into an attractive man and lure women to their death. The only way to stop this creature is by placing iron or steel (anything made from metal) on its skin. Selkies are magical creatures that live in the sea as seals but can shed their skin to become human beings. The legend says that if you hide a Selkie's skin, she won't be able to return to the sea and will stay on land forever. Some men would even steal Selkie's skins so they could marry them. Interestingly enough, there are also male Selkies who often come on land looking for wives.