UNIT 4 LESSON 9 – CHEMISTRY OF THE ATMOSPHERE

Earth's Early Atmosphere

Earth's Early Atmosphere

The theory suggesting intense volcanic activity released gases forming the early atmosphere, potentially rich in CO2 and lacking O2, with nitrogen, methane, and ammonia present.

Oxygen Production

Algae and plants produced oxygen through photosynthesis, gradually increasing oxygen levels in the atmosphere over billions of years.

Carbon Dioxide Reduction

Algae, plants, sedimentary rocks, and fossil fuels contributed to reducing CO2 levels in the atmosphere.

Greenhouse Gases

Water vapor, CO2, and CH4 maintain Earth's temperature by absorbing and radiating heat, leading to the greenhouse effect and global warming.

Human Activities and Greenhouse Gases

Activities like driving, electricity consumption, livestock raising, and organic waste decay contribute to increased CO2 and CH4 levels in the atmosphere.

Global Climate Change

Human-induced global warming may lead to climate change effects like species extinction, rising sea levels, migration, and decreased crop yields.

Carbon Footprint

The total emissions of CO2 and greenhouse gases from a product, service, or event, which can be reduced by minimizing carbon dioxide and methane emissions through various means.

Atmospheric Pollutants

Combustion of fuels releases pollutants like carbon dioxide, water vapor, carbon monoxide, oxides of nitrogen, sulfur dioxide, and particulates, impacting human health and the environment.