Answer: If the percentages of nitrogen, oxygen, and argon gas in the atmosphere changed, it could have various impacts on the environment, weather patterns, and living organisms.
Changes in the percentage of nitrogen in the atmosphere are less likely to have a significant impact, as nitrogen is relatively inert and does not react easily with other elements or compounds. However, changes in the concentration of nitrogen can affect the growth of plants and the nitrogen cycle, which is crucial for the survival of many organisms.
Changes in the percentage of oxygen in the atmosphere could have a more immediate impact on living organisms. A decrease in oxygen concentration could lead to hypoxia or anoxia, which can be lethal to many organisms, including humans. On the other hand, an increase in oxygen concentration could lead to an increased risk of fires.
Changes in the percentage of argon in the atmosphere would likely have less impact, as argon is an inert gas that does not interact chemically with other elements or compounds. However, changes in the concentration of argon could affect the thermal conductivity and insulation properties of the atmosphere.
Overall, the percentages of nitrogen, oxygen, and argon in the atmosphere are relatively stable, and significant changes in these percentages would likely have far-reaching consequences.