- In hot places, incuding deserts, some animals lose heat from blood circulating through bare skin and through large, thin ears. Plants reduce water loss with large, swollen stems, a thick surface area, spines not leaves and a spreading, shallow root system to catch limited rainfall.
- The camel is adapted to desert conditions: it's stomach can store 20 litres of water; it produces very little urine;fat is stored in the hump, keeping fat stores away from the rest of the body so heat can be lost more easily; and it's long legs keep it well above the hot ground.
- In cold places, thick fur insulates mamals from heat loss. Small ears and compact bodies reduce the surface area. Plants grow low to absorb heat from the ground warmed by sunshine and to avoid cold winds.
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