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Deserts
By: Christie Smicherko
 Environmental conditions vary
from one desert to another.




Little rain fall
300 mm of rainfall annually
Hot
Cold
Geographic
Location
Unique Biota
Plants
 Dense covering of plant
hairs
 Adaption to drought:




Small leaves
Produce leaves
No leaves
Only germinate or grow
during infrequent wet
periods
Unique Biota- Animals
 Use behavior to avoid
environmental extremes
 Active at dusk and dawn
or at night
 Body orientation
More plants and animals!
Deserts are
threatened by:
• Humans pumping out
underground water
• Drought
Questions?