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  • Endotherms
    • Endotherm is an organism that can use internal sources of heat, such as heat generated from metabolism in the liver, to maintain its body temperture
    • Many  Chemical reactions are EXOGENIC- this means they release energy in the form of heat
    • They can usally increase their respiration rate in the liver simply to release heat
      • Metabolism Rate can be alter to generate more of less heat
    • Advantage     1) Ability to inhabit colder parts of the planet
    • Advantage    2) A fairly constant body temperature regardless of the external temperature
    • Advantage    3) ACTIVITY is still possible even when the temperature is cool e.g at Night or at winter.
    • Disadvantage   1) More energy from food is used for keeping the body warm and less is used for growth.


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