1 The highest monthly average temperature in Keystone for July is 54 degrees. 2  The lowest monthly average temperature in Keystone for December is 14 degrees. 3  The most monthly precipitation in Keystone occurs in January with 0 inches.  The air quality index in Keystone is 15% better than the national average.
Simple eye in invertebrates. A simple eye (sometimes called a pigment pit) refers to a type of eye form or optical arrangement that contains a single lens. A simple eye is so called in distinction from a multi-lensed compound eye, and is not necessarily at all simple in the usual sense of the word. The eyes of humans and large animals, and camera lenses are classed as simple because in both cases a single lens collects and focuses light onto the retina or film.
Solitary bees, bumblebees, and wasps do not die when they sting you. In honey bee workers, the stinger has fairly large, backward-facing barbs on the lancets. When the worker bee stings you, these barbs dig into your flesh, making it impossible for the bee to pull its sting back out.nswer: The answer actually depends on what kind of bee stung you. Honey bees do, indeed, die after they sting you, but other bees (and wasps, for that matter) can sting you and live to fight another battle.