9th Grade Biology
Assume that the fish have an average mass of 280g. The average caloric value is 8kcal/g. The heron
is able to digest 60% of the fishesâ€™ mass. How many will it need to eat to sustain its caloric intake of
3,000kcal/day?
asked by
Aidan

3000kcal/day / (280g/fish * 8kcal/g * 60%) = 2.2 fish/day
posted by Steve

Thank you SO much
posted by Aidan
Respond to this Question
Similar Questions

Finite
Assume that the pond contains 120 fish: 97 green, 22 yellow, and 1 red. A contestant pays $0.60 to randomly catch one fish and receives $0.40 if the fish is green, $0.95 if the fish is yellow, and $11.00 if the fish is red. How 
Math
If 5 fishermen catch 5 fish in 5 minutes, how many minutes will it take 50 fishermen to catch 50 fish? If 5 fishermen catch 5 fish in 5 minutes, then the average time it takes each fisherman is 5 minutes to catch one fish. It will 
chemistry
The area of a pond is exactly 34 square meters, and the average depth is 34. meters. If the density of fish is 12 fish per cubic meter, how many fish can be found in 1/3 of the lake? 
physical science
A smoke particle undergoing Brownian motion in air has a mass of 2.00 x 10 5 kg. a) what is the its average velocity if the temperature is 300 K? b) what is its average kinetic energy? The average kinetic energy of a particle or 
math
Assume a nation's per capita daily caloric intake is currently 1400, and total caloric supply increases by 2% annually while the population grows by 3% annually. How many years until the nation's per capita daily caloric intake 
math
The average mass of a group of children is 36kg. If 3/7 of the no. of children are girls and their average mass is 32 kg, find the average mass of the boys. 
scientist
what is the therms " average atomic mass is a .............. average ,and so is calculated from a" normal " average? 
Calculating Average Atomic Mass
Rubidium has 2 common isotopes, Rb 85 and Rb 87. If the abudance of Rb 85 is 70 percent and the abundance of Rb 87 is 30 percent, what is the average atmoic mass of rubidium? For the above question, does this mean I would multiple 
physics
Model rocket engines are sized by thrust, thrust duration, and total impulse, among other characteristics. A size C5 model rocket engine has an average thrust of 5.26 N, a fuel mass of 12.7 g, and an initial mass of 25.5 g. The 
Math
Okay ... just checking on how to figure this ... Here is the problem: Some researchers estimate that humans walk about 10,000 in their lifetimes, on average. Assume that the average life span is 70 years. a) about how many miles