Desert and polar adaptations

Desert — hot days, cold nights, little water:

• Animals are active at night (nocturnal) — kangaroo rat, fennec fox
• Thick skin to retain water
• Burrow underground to escape heat
• Plants: deep roots, spines, water-storing stems

Polar — extreme cold, ice, scarce plants:

• Thick fur + fat layer (blubber) for insulation
• White fur for camouflage
• Small ears/tail — less heat loss
• Huddling (penguins) shares body heat