The Earth's Early Atmosphere The Earth's early atmosphere was very different from today's. It initially consisted of gases released from volcanic activity, such...
The Earth's early atmosphere was very different from today's. It initially consisted of gases released from volcanic activity, such as water vapor, carbon dioxide, nitrogen, and small amounts of other compounds. There was little to no free oxygen present.
Over billions of years, the Earth's atmosphere evolved due to the following processes:
The greenhouse effect is a natural process that warms the Earth's surface. Greenhouse gases like carbon dioxide, methane, and water vapor trap some of the Sun's heat, keeping the planet's temperature suitable for life.
Human activities like burning fossil fuels, deforestation, and agriculture have increased greenhouse gas levels in the atmosphere, enhancing the greenhouse effect. This leads to global climate change with effects such as rising temperatures, sea level rise, and more frequent extreme weather events.
Combustion of fuels releases various pollutants into the atmosphere:
Problem: Identify the main pollutants released from a car's exhaust.
Solution:
Understanding atmospheric chemistry is crucial for mitigating climate change and reducing air pollution's environmental and health impacts.