Which one of the following does NOT describe a use of a scientific model?

correct answer is a. and d.

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls

the fossil record provides evidence of a common ancestor to many species.