Atmospheric gases are the various gases that make up the air we breathe. The most abundant of these gases are nitrogen, which makes up about 78% of the atmosphere, and oxygen, which accounts for around 21%. Other gases, like carbon dioxide and argon, are present in much smaller amounts but play important roles in processes like photosynthesis and maintaining the Earth's temperature. These gases are essential for life on Earth. Oxygen is crucial for humans and animals to breathe, while carbon dioxide is used by plants to produce food. The balance of these gases is vital for a healthy environment, influencing weather patterns and climate.