The verge must be at least 100 centimeters wide to ensure safety and provide enough space for pedestrians and cyclists. This width allows for comfortable movement and ensures visibility for both drivers and other road users. A wider verge can also accommodate additional features such as landscaping or street furniture, enhancing the overall aesthetics of the area. **

The verge board must be at least 15 centimeters wide. **

There are five species of rhinoceroses in the world, which are the white rhinoceros, black rhinoceros, Indian rhinoceros, Javan rhinoceros, and Sumatran rhinoceros. The total population of all rhinoceros species is estimated to be around 27,000 individuals. However, due to poaching and habitat loss, the number of rhinoceroses is declining rapidly, making them critically endangered. Efforts are being made to protect and conserve these magnificent creatures to ensure their survival for future generations. **

The concept of "must this be" can be interpreted in different ways depending on the context. In some cases, it may refer to a necessity or inevitability of a certain situation or outcome. In other cases, it may question the validity or justification of something. Ultimately, whether something "must be" or not is subjective and can vary depending on individual perspectives and beliefs. **

One must stand at an altitude of at least 35,000 feet (10,668 meters) to perceive the curvature of the Earth. This is the typical cruising altitude of commercial airplanes, and from this height, the curvature of the Earth becomes noticeable. At lower altitudes, the curvature is not easily discernible to the naked eye. **

To notice the curvature of the Earth, one would need to be at a significant height above the ground. Typically, this would require being at an altitude of at least 35,000 feet (10,668 meters) or higher, such as when flying in a commercial airplane. At this height, the horizon appears slightly curved, giving a sense of the Earth's curvature. Standing on the ground, the curvature of the Earth is not easily noticeable due to the relatively small size of the planet compared to the vastness of the Earth's surface. **

An asteroid would need to be at least 1 km in diameter to cause widespread destruction on Earth. However, to completely destroy the planet, an asteroid would need to be much larger, around 10 km in diameter. This size of asteroid would release enough energy upon impact to cause global devastation, including massive tsunamis, wildfires, and a "nuclear winter" effect from the dust and debris thrown into the atmosphere. Fortunately, the likelihood of such a catastrophic event is extremely low. **

The name "Earth" is derived from the Old English word "eorthe" and the Anglo-Saxon word "erda." It is believed that the name Earth has its origins in ancient Germanic and Norse mythology, where it was associated with the goddess of the Earth. The exact person or culture who named our planet Earth is not known, as it has been used for centuries across different languages and cultures. **