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19: Deserts

Last updated

Apr 1, 2025
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- 18.3: Global Climate Change
- 19.1: Deserts

Lumen Learning
Lumen Learning

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19.1: Deserts
This page discusses deserts as arid regions covering one-third of Earth's surface, formed by erosion and weathering processes. They host specialized flora and fauna adapted to extreme conditions. Various desert types are defined by precipitation and temperature, with unique geological features like dunes and stone pavements. The text explores human interaction, cultural significance, and threats like desertification.
19.2: Desertification
This page discusses desertification, a process exacerbated by climate change and human activities, affecting 40% of Earth's land and leading to environmental and socio-economic issues. Countermeasures like sustainable practices and soil restoration are needed but face challenges. It highlights projects like the Regeneration Project in Ethiopia, which applies innovative grazing methods to restore grasslands and sequester CO2.
19.3: Dunes
This page covers the formation, types, and ecological importance of sand dunes, which act as habitats and protect coastlines. It details various dune classifications shaped by wind patterns and discusses the impact on human settlements, notably desertification. The page provides a global overview of notable dune locations and includes references to studies on dune management and fixation.
19.4: Video- Desertification

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