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The complete Wings of Liberty campaign, full use of Raynor, Kerrigan, and Artanis Co-Op Commanders, with all others available for free up to level five, full access to custom games, including all races, AI difficulties, maps; unranked multiplayer, with access to Ranked granted after the first 10 wins of the day in Unranked or Versus AI.
Wikimedia Commons, or simply Commons, is a wiki-based media repository of free-to-use images, sounds, videos and other media. [1] It is a project of the Wikimedia Foundation . Files from Wikimedia Commons can be used across all of the Wikimedia projects [ 2 ] in all languages, including Wikipedia , Wikivoyage , Wikisource , Wikiquote ...
The Sahel region (brown), proposed Great Green Wall (green), and participating countries (white) Satellite photo of the Sahara The Great Green Wall or Great Green Wall for the Sahara and the Sahel (French: Grande Muraille Verte pour le Sahara et le Sahel; Arabic: السور الأخضر العظيم, romanized: as-Sūr al-ʾAkhḍar al-ʿAẓīm) is a project adopted by the African Union in ...
However, recent research has challenged this notion, arguing instead that desertification in ancient Cyrenaica was the primary driver of silphium's decline. [ 15 ] Another theory is that when Roman provincial governors took over power from Greek colonists, they over-farmed silphium and rendered the soil unable to yield the type that was said to ...
In hydrology, oasification is the antonym to desertification by soil erosion. This technique has limited application and is normally considered for much smaller areas than those threatened by desertification. [citation needed] Oasification is also a developing direction of environmental engineering.
As per the Millennium Ecosystem Assessment of 2005, land degradation is in defined as "the reduction or loss of the biological or economic productivity of drylands". [6] A similar definition states that land degradation is the "degradation, impoverishment and long-term loss of ecosystem services".
Desertification is a gradual process of increased soil aridity.Desertification has been defined in the text of the United Nations Convention to Combat Desertification (UNCCD) as "land degradation in arid, semi-arid and dry sub-humid regions resulting from various factors, including climatic variations and human activities."
A satellite image of the Sahara, the world's largest hot desert and third largest desert after Antarctica and the Arctic. Desert greening is the process of afforestation or revegetation of deserts for ecological restoration (biodiversity), sustainable farming and forestry, but also for reclamation of natural water systems and other ecological systems that support life.
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