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Climate and Natural Vegetation- Hot Desert- Sahara - Coggle Diagram
Climate and Natural Vegetation- Hot Desert- Sahara
Climate of the Sahara Desert
Very Hot Temperatures
Daytime: Often over 40°C in summer
Night: Can drop sharply (deserts have extreme temperature ranges)
Very Low Rainfall
Less than 250 mm per year (sometimes none for years)
High Evaporation
Water evaporates quickly due to heat and dryness
Clear Skies & Strong Sunlight
Few clouds; high solar radiation
Natural Vegetation in the Sahara
Cacti and Succulents
Store water in stems or leaves
Thick, waxy skin to reduce water loss
Acacia Trees
Long roots reach underground water
Small leaves reduce evaporation
Grasses and Shrubs
Widely spaced to reduce competition
Some lie dormant until rain comes
Halophytes (salt-tolerant plants)
Found near salty water sources or oases
Summary of Plant Adaptations
✔ Long roots or wide roots
✔ Water storage (stems or leaves)
✔ Small or no leaves
✔ Thick skin or waxy coating
✔ Seeds that lie dormant for years