Sunburn can occur in less than 15 minutes, and in seconds when exposed to non-shielded welding arcs or other sources of intense ultraviolet light. Nevertheless, the inflicted harm is often not immediately obvious. After the exposure, skin may turn red in as little as 30 minutes but most often takes 2 to 6 hours.
Structures such as tree rings and the various tissues are often observed features. Petrified wood is a fossil in which the organic remains have been replaced by minerals in the slow process of being replaced with stone. This petrification process generally results in a Quartz Chalcedony mineralization.
Alongside cats and tigers, foxes are solitary hunters. There has been the rare sighting of a vixen hunting with her cub, but in general they will forage and hunt for food alone. Although a fox is classified as a carnivore they are omnivorous and will eat almost anything including fruit and vegetables.