Complete the sentences with the words derived from the given ones

Mother Nature is [ ] surprising us with new types of weather! For instance, did you know there is such a thing as a fire rainbow? This [ ] phenomenon creates a magnificent [ ] of colour that looks like a rainbow on fire! However, this couldn't be further from the [ ]. Fire rainbows are anything but hot! In fact, they are caused by [ ] ice crystals in thin, high-altitude clouds. When these clouds lie [ ] against the sun, the sunlight hits the crystals at the perfect angle to produce an [ ] rainbow across the entire sky! They truly are a [ ] sight to behold! Unfortunately, they only take place [ ] and are limited to certain parts of the world. Those living in Northern Europe will be [ ] to learn that they are almost non-existent in that region. In fact, they appear so [ ] that to witness one would be nothing short of a miracle! However, they are a fairly common [ ] in the United States and have been spotted multiple times in a single year.