Question: During constant flight, hummingbirds expend about 2.9 kJ / hr, relying on fat oxidation as an energy source. (a) Calculate the gms of fat necessary

During constant flight, hummingbirds expend about 2.9 kJ / hr, relying on fat oxidation as an energy source.
(a) Calculate the gms of fat necessary to sustain a 20-hr nonstop flight.
(b) If the birds relied on carbohydrate for this energy, how much additional weight would they have to start the flight with?

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