A 2010 study on mantas around Japan confirmed the morphological and genetic differences between M. birostris and M. alfredi. citation Fossil record While some small teeth have been found, few fossilized skeletons of manta rays have been discovered. Source: Internet
According to Gardner, this hypothesis posits that light rays travel in circular paths, and slow as they approach the center of the spherical star-filled cavern. Source: Internet
A cool roof made from a reflective material such as vinyl reflects at least 75 percent of the sun's rays, and emit at least 70 percent of the solar radiation absorbed by the building envelope. Source: Internet
A cloud illuminated by sunlight Refraction is the bending of light rays when passing through a surface between one transparent material and another. Source: Internet
Additionally, the orbit of L 2 – L 5 takes them out of the protection of the Earth's magnetosphere for approximately two-thirds of the time, exposing them to the health threat from cosmic rays. Source: Internet
56 Ni is radioactive and decays into 56 Co by beta plus decay (with a half life of six days) and gamma rays. Source: Internet