Fungi are a kind of decomposers.
If there were no fungi, the ecosystem would not exist, and dead organisms would also pile up because there were no decomposers any more.
Answer: A
Explanation: hypothesis is something na hindi pa napatutunayan at nagpag-aaraalan while theory is something na backedup with evidences and data
im not sure what you mean by insert a t after the first c, but translated this would be AUG GAU CGG
Hope this helps!