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Aleks04 [339]
3 years ago
7

Agricultural density measures

Advanced Placement (AP)
1 answer:
olga nikolaevna [1]3 years ago
7 0
E. The number of farms per square kilometer
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Suppose a fox in a food web feeds only on rabbits, squirrels, mice and birds, all of which feed exclusively on plant material. A
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Answer:

square metres of plant materials required to support the fox = 3650 m²

Explanation:

From the given information:

the daily caloric requirement of the fox = 800  

In a year, we have = 800 kcal × 365 /year = 292,000 kcal/year

Also, only 10% of the energy at a particular trophic level can be passed onto the next.

the net productivity of the plant material = 8000 kcal/m²/yr

So, using 10% of energy at a particular level, the fox only need 80 kcal/m²/yr

The objective is to determine in square meters, how many materials are required to support the fox.

square metres of plant materials required to support the fox = \dfrac{292,000}{80}

= 3650 m²

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