A student was investigating the populations of organisms in a school pond.
| Organism | Number | Mean biomass of each organism in grams | Biomass of population in grams |
|---|---|---|---|
| Pond weeds | 40 | 120.0 | 4800 |
| Water fleas | 940 | 0.05 | ? |
| Damselfly nymphs | 80 | 0.6 | 48 |
| Minnows | 12 | 15.0 | 180 |
| Kingfisher | 1 | 38.0 | 38 |
Calculate the biomass of the population of water fleas in the pond.
