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15 cards from this deck
Land becoming more desert-like, drier & less productive
A third
Sahel (below Sahara Desert)
Reduces rainfall
More water evaporates from land & plants, drying soil
Cattle eat plants faster than they can regrow
Uses up all nutrients in soil
Salts drawn to surface when water evaporates; toxic to plants
Tree roots hold soil together, reduce erosion
Growing trees amongst crops
Store water in wet season for dry season irrigation
Used as fertilizer for crops
Different nutrients used, same ones not depleted
Hold water on soil, prevent runoff
Uses sun's energy instead of fuel wood
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