From similarity and differences of morphological, biochemical, cellular characteristics, biologist have constructed 'phylogenetic (evolutionary) trees' (who is most closely related to who, analogous to a family tree)
In the United States, lightning routinely kills more people each year than tornadoes or hurricanes. Tornadoes, hail, and wind gusts get the most attention, but only lightning can strike outside the storm itself. Lightning is the first thunderstorm hazard to arrive and the last to leave.
The lightningâs heat that it makes can damage the lungs, brain and vital organs. Lightning causes burns and shocks but people usually recover completely. Lightning obviously can kill people. However 9 out 10 people who get struck by lightning survive but they usually suffer with a burn.