If the fox were to feed only on insect-eating birds how, Ask an Expert

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Q1. The lethal inhalation dose of sarin for a 200 lb person has been determined to be 0.0015mg. Find out the LD50 of sarin that researchers used to compute that lethal inhalation dose.

Q2. Assume that a fox feeds only on rabbits, squirrels, mice, and seed-eating birds, all of which feed on plant material. How various square meters of plant material are then required to support the fox if the net primary productivity of the plant material is 8000 Kcal/m2/year? Imagine that the fox's daily caloric requirement is 800 Kcal, and that only 10 percent of the energy at one trophic level can be passed on to the next. If the fox were to feed only on insect-eating birds, how many square meters of plant material would be necessary?

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