The diagram below shows how matter cycles among organisms in an ecosystem.
Modified from image courtesy of USDA
Which of the following statements correctly describes how matter cycles among organisms within this ecosystem?
A.
Fungi obtain matter directly from arthropods.
B.
Arthropods obtain matter directly from nematodes.
C.
Only decomposers cycle matter within this ecosystem.
D.
Most of the matter in this ecosystem comes from nematodes.