Weathering and Erosion: Chemical Weathering

The video tutorial explains chemical weathering, where the chemical composition of rocks changes due to reactions with air, water, and other substances. Water is a key agent, dissolving minerals and forming acids that accelerate decomposition. Acid rain, caused by air pollution, further speeds up weathering. Oxidation, another weathering type, occurs when oxygen reacts with metals, forming rust. Biological weathering involves living organisms like lichens and plant roots releasing acids that decompose rocks. Chemical and mechanical weathering often work together to break down earth materials.

Describe the process of oxidation and its effects on metals and rocks.

How do living organisms contribute to the chemical weathering of rocks?