In a grassland ecosystem, grass is the producer. The grass is eaten by rabbits. The rabbits are eaten by foxes. And the foxes are eaten by hawks. If the grass produces 83,721 kcal of energy, how much m² yr energy will the apex predator receive? (1 point)
8,372.1 kcal m²yr
8.3721 kcal m²yr
837.21 kcal m²yr
83.721 kcal m²yr