On a molecular level, the structure of chlorophyll is very similar to heme, which is a part of hemoglobin present in human blood. Heme, which is what makes blood appear bright red once exposed to oxygen, is bound to proteins forming hemoglobin.
Lightning is a bright flash of electricity produced by a thunderstorm. All thunderstorms produce lightning and are very dangerous. If you hear the sound of thunder, then you are in danger from lightning. Lightning kills and injures more people each year than hurricanes or tornadoes; between 75 to 100 people.
Thunderstorms are created when air near the ground is heated and is transported upward into the atmosphere -- a process that's known as convection.. Since cumulonimbus clouds are clouds that extend vertically up into the atmosphere, they're often a sure-fire sign that strong convection is taking place.