Since the greenhouse gases are less than 1% of our atmosphere, how can an increase in the greenhouse gases due to human activity cause global warming? The specific heat capacity of gas mixtures is proportional to the amount of each component. - TL Winslow

https://www.quora.com/Since-the-greenhouse-gases-are-less-than-1-of-our-atmosphere-how-can-an-increase-in-the-greenhouse-gases-due-to-human-activity-cause-global-warming-The-specific-heat-capacity-of-gas-mixtures-is-proportional-to-the/answer/TL-Winslow