From the following list, take the producers and write them in the blank space on the lowest level. acorns deer mice apple trees eagles owls cabbage frogs potatoes carrots grains rabbits chickens grass squirrels corn horses wolves cows lettuce worms take the plant-eating consumers who eat only producers and put them on the second level. put all predators on the third level. after completing the lab, respond to the following questions: were there more producers than consumers and more consumers than predators on your pyramid? a mouse eats 100 times his own weight in grain in a lifetime. you can see that plants must produce a great amount of food for just one mouse. what do you think would happen if grain was no longer available for the mouse to eat? how would it affect other organisms in your ecosystem?