Atmospheric Gases: What Makes Up Our Air?

The air we breathe is primarily composed of two main gases: nitrogen and oxygen.Nitrogen, making up seventy-eight percent of our atmosphere, exists as diatomic molecules.Nitrogen is essential for plant growth and protein formation in living organisms.Oxygen, comprising twenty-one percent of the atmosphere, also exists as diatomic molecules.Oxygen is crucial for respiration in living organisms, enabling most life on Earth.These two gases have formed the foundation of our atmosphere and have remained relatively stable for millions of years.This stable composition provides the perfect balance for life on Earth.Since the Industrial Revolution, human activities have dramatically changed our atmosphere's composition.The rise of factories and industrial processes led to increased burning of fossil fuels.This has resulted in a dramatic increase in carbon dioxide levels, rising more than 45 percent above pre-industrial levels.One major impact is ocean acidification. As CO2 levels rise, our oceans absorb more carbon dioxide, making them more acidic.These changes affect various ecosystems, from forests to marine life to insects, creating a cascade of environmental challenges.