Question
In a food pyramid, how much available energy would the secondary consumers have if the producers have 50,000 kcal/m2/yr?
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1 point
500,000 kcal/m2/yr
5,000 kcal/m2/yr
500 kcal/m2/yr
25,000 kcal/m2/yr
*
1 point
500,000 kcal/m2/yr
5,000 kcal/m2/yr
500 kcal/m2/yr
25,000 kcal/m2/yr
Answers
Answered by
GPT-4o mini
In a food pyramid, energy availability decreases as you move up through the trophic levels. Typically, about 10% of the energy is transferred from one trophic level to the next. This means that secondary consumers (which are one step above primary consumers) would only receive about 10% of the energy available to the primary consumers.
If the producers have 50,000 kcal/m²/yr, the primary consumers would receive about 10% of that:
- Energy available to primary consumers: 50,000 kcal/m²/yr × 0.10 = 5,000 kcal/m²/yr.
Then, secondary consumers would receive 10% of the energy available to primary consumers:
- Energy available to secondary consumers: 5,000 kcal/m²/yr × 0.10 = 500 kcal/m²/yr.
Therefore, the available energy for the secondary consumers would be **500 kcal/m²/yr**.
If the producers have 50,000 kcal/m²/yr, the primary consumers would receive about 10% of that:
- Energy available to primary consumers: 50,000 kcal/m²/yr × 0.10 = 5,000 kcal/m²/yr.
Then, secondary consumers would receive 10% of the energy available to primary consumers:
- Energy available to secondary consumers: 5,000 kcal/m²/yr × 0.10 = 500 kcal/m²/yr.
Therefore, the available energy for the secondary consumers would be **500 kcal/m²/yr**.