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.
â¢ It is estimated that more than 1,000 people are injured by lightning strikes in the. United States each year. â¢ In 2009, 34 people were killed by lightning strikes in the United States. Nearly 60%. of the fatalities occurred in open areas outdoors, while 15% of those killed were. standing under a tree.