a
The arrows point in the opposite direction of the flow of carbohydrates, like glucose.
b
The arrows show the flow of energy and why there are many more raccoons than grass plants in the ecosystem.
c
The arrows flow of energy show most of the energy goes to the highest level consumer.
d
The arrows represent the flow of energy in one direction from producers to consumers.
e
The arrows illustrate the movement of nutrients within the ecosystem, from decomposers back to producers.