QuestionJune 12, 2025

If the grass contains 100,000 kcal of energy, how much energy will a fox obtain from eating a bird? 10,000kcal 1,000 kcal 100 kcal 10 kcal

If the grass contains 100,000 kcal of energy, how much energy will a fox obtain from eating a bird? 10,000kcal 1,000 kcal 100 kcal 10 kcal
If the grass contains 100,000 kcal of energy, how much energy will a fox obtain from eating a bird? 10,000kcal 1,000 kcal 100 kcal 10 kcal

Solution
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Answer

1,000 kcal Explanation 1. Understand Energy Transfer In a food chain, energy transfer follows the 10% rule, where only about 10% of energy is passed to the next trophic level. 2. Calculate Energy for Bird Grass (Producer) → Bird (Primary Consumer): 100,000 \text{ kcal} \times 0.1 = 10,000 \text{ kcal} 3. Calculate Energy for Fox Bird (Primary Consumer) → Fox (Secondary Consumer): 10,000 \text{ kcal} \times 0.1 = 1,000 \text{ kcal}

Explanation

1. Understand Energy Transfer<br /> In a food chain, energy transfer follows the 10% rule, where only about 10% of energy is passed to the next trophic level.<br /><br />2. Calculate Energy for Bird<br /> Grass (Producer) → Bird (Primary Consumer): $100,000 \text{ kcal} \times 0.1 = 10,000 \text{ kcal}$<br /><br />3. Calculate Energy for Fox<br /> Bird (Primary Consumer) → Fox (Secondary Consumer): $10,000 \text{ kcal} \times 0.1 = 1,000 \text{ kcal}$
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