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.
Best Answer: They bring convective weather which is short for basically showers and thunderstorms. The airmass associated with a cold front is very unstable. Instability means quickly rising air and that accelerated upward vertical motion is largely associated with thunderstorms. They also bring strong northwesterly winds and colder temperatures. http://en.wikipedia.org/wiki/Weather_fro... http://okfirst.mesonet.org/train/meteoro...