You don't have the answer choices but if there were no decomposers within an ecosystem, some plants could die due to a shortage of nutrients .
Answer:
-39 + 20x
Step-by-step explanation:
4 + 7 x 3 - 24 x 2 + 20x - 16
4 + 21 - 48 + 20x - 16
-39+20x