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12 questions from this quiz
Maintenance of constant internal environment
37°C
Loss of water vapour from aerial plant parts
Animals that cannot maintain constant internal temp.
Reptiles and insects
Animals that maintain constant body temp.
Metabolic reactions
Thyroxine
Blood vessels widen to increase heat loss
Skeletal muscles contract/relax, making heat
Blood vessels narrow, reducing heat loss
They need high energy to regulate temp.
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