Answer:
D. Microscopic organisms break down the apple and release its material into the soil and air.
Explanation:
Without microscopic organisms today, everything that has died or fallen will still remain on the ground. Fungi, bacteria, and etc. play an essential role in the Earth's ecosystem by breaking down organic material.
My qualitative observation that the flower on the right had larger petals proved to be a great piece of evidence for my research project.
The answer to this would be d. :)
Maybe b and c ? It’s makes sense to wear protective clothing and staying indoors
