The spark of life where did organic molecules come from case study answers

The spark of life is heavily debated but many scientists believe that lightning in the Earth's atmosphere created the atmospheric conditions necessary for the molecular process. Certain elements such as water vapor and hydrogen sulfide were part of a bonding process that began the first spark of life.

I believe that the level of CO2 level is higher during winter in the northern hemisphere compared to levels in the summer. There's more carbon dioxide in the winter and a bit less in the summer. That's the collective breathing of all the plants in the Northern Hemisphere. Plants are accumulating carbon in the spring and summer when they are active, and they are releasing carbon back to the air in the fall and winter.