Ectotherms

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  • ECOTHERMS- maintaining body temperature
    • BEHAVIOURAL
      • Expose body to sun
        • more heat absorbed as larger surface area
          • snakes
      • orientate body towards sun
        • exposes larger surface area for head absorption
          • Locusts
            • less surface area axposed so less heat absorption
      • orientate body away from sun
        • less surface area axposed so less heat absorption
      • Hide in burrows or shade
        • reduce heat absorption by keeping out of sun
          • Horned lizards
    • PHYSIOLOGICAL
      • Expand ribcage/ alter body shape
        • absorb less or more heat from sun
          • horned lizards
      • increase breathing movements
        • increase water loss by evaporation
          • Locusts

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