Answer :
Final answer:
Basal metabolism is the primary contributor to daily energy expenditure in the body, followed by physical activity and the thermic effect of food.
Explanation:
Basal metabolism accounts for the majority of energy expenditure in the body, supporting essential functions at rest such as breathing and heartbeat. This constitutes between 50-70% of daily energy expenditure. Additionally, energy is burned through physical activity and the thermic effect of food.
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