
5. Global Warming / Cooling
Global temperature repeats up and down, now it is increasing. Because it has high increasing ratio in northern hemisphere, global warming is mainly supposed to occur by the reason of that population of northern hemisphere is larger than the southern. The increasing of CO2 is supposed to influence less. It is only 0.02% of O2 in the atmosphere turned to CO2. Those CO2 are supposed to affect on the acidification of sea because most of CO2 is floating on the surface and melted into the sea finally....