It is estimated that the mature Atlantic herring population today has a bio-mass (total weight of the population) of approximately 2 million metric tonnes (2 billion kg). If an average adult Atlantic herring weighs 0.125 kg, how many adult Atlantic herring are there in the entire population?
Hint: _____ kg / 0.125 kg per fish = _____ fish
There are ________ fish in the entire population.