The sun is never visible in the north because of the tilt of the Earth's axis. The Earth is tilted on its axis at an angle of approximately 23.5 degrees. This tilt causes the sun's rays to be more direct in the northern hemisphere during the summer months, leading to longer days and shorter nights. Conversely, during the winter months, the tilt causes the sun's rays to be more direct in the southern hemisphere, resulting in shorter days and longer nights in the north. **

The tan is already visible when tanning in the sun once the skin has been exposed to UV rays for a period of time. This can vary depending on individual skin types and the intensity of the sun. Generally, a tan may start to become noticeable within a few hours of sun exposure, but it can take a few days for the full effects to develop. It is important to practice safe sun exposure and use sunscreen to protect the skin from damage. **

Water spots on an iPhone display can be caused by the minerals in the water drying on the screen. To remove these spots, try using a microfiber cloth to gently wipe the screen in a circular motion. If the spots persist, a mixture of equal parts water and white vinegar can be used to lightly dampen the cloth before wiping the screen. Be sure to avoid using excessive moisture or harsh chemicals that could damage the screen. **

To remove water stains from an iPhone display, you can try using a microfiber cloth to gently wipe the screen. If the stains persist, you can dampen the cloth slightly with distilled water and continue wiping the screen. Avoid using harsh chemicals or abrasive materials, as they can damage the screen. If the water stains are still visible after cleaning, it may be necessary to seek professional help from an Apple store or authorized service provider. **

Visible refers to something that can be seen or perceived by the eyes. It is anything that is within the range of sight or observation. In a broader sense, visibility can also refer to the extent to which something is noticeable, recognized, or prominent. In the context of design or user interface, visibility is crucial for ensuring that important elements are easily seen and accessible to users. **

While being underweight can sometimes be visible, it is not always obvious. Some individuals may appear thin but still be underweight, while others may not show visible signs of being underweight. Additionally, body composition and distribution of weight can vary greatly among individuals, making it difficult to determine someone's weight status based solely on appearance. It's important to consider other factors such as overall health, diet, and lifestyle when assessing whether someone is underweight. **

No, Toru is not visible. Toru is a fictional character from Haruki Murakami's novel "Norwegian Wood," and therefore exists only within the pages of the book. In the physical world, Toru is not visible because he is not a real person. However, within the context of the novel, Toru is visible to the reader through the descriptions and actions provided by the author. **

If the sun never rose again and only the moon was visible, it would have significant impacts on our planet. Without the sun's light and heat, plant life would struggle to survive, leading to a collapse of the food chain. The lack of sunlight would also affect human activities, making it difficult to grow crops and generate electricity. Overall, the world would be plunged into darkness and face immense challenges in sustaining life as we know it. **