Which of the following kinds of studies is most reliable?

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

b) the inside picture would look at a very high temperature in a very low ph

it is a limiting nutrient limited by a single nutrient in the ecosystem, & the single goes very slow.