[ 247 ] Life Science GED ® TEST SCIENCE FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • The food web for a woodland ecosystem bordering an area of farmland is shown here. Foxes Owls Birds Mice Grasshoppers Rabbits Carrots Grasses Grains (Not drawn to scale) According to the concept of consumers and producers, rabbits are considered primary consumers because they A. feed on grasses and carrots B. are consumed by foxes only C. compete with grasshoppers only D. are the only consumer of carrots