Ascientific model is a simplified representation of a natural phenomenon. to be useful, a model must
accurately represent the components of the phenomenon as well as their relationships. a food web and
an energy pyramid are both scientific models.
the food web below shows the feeding relationships among several organisms in a meadow ecosystem
foxes
hawks
snakes
rabbits
shrews
small
- birds
bird
caterpillars
milkveed
crickets
g
rasses
assume that the amount of energy represented by the producers in this food web is 125,000 kilocalories
(kcal). in the box below, draw an energy pyramid that models the feeding relationships in the food web
write the name of each kind of organism in the correct trophic level. label che trophic levels, and sho
the amount of energy available at each level