The term 'Turns Into Compost' can be broken down into two crossword solutions: DECAYS (6 letters) and ROTS (4 letters). Decaying is the process of breaking down organic matter, such as plants and animals, into simpler forms of matter. This process is caused by bacteria and fungi that break down the material into smaller pieces. Rotting is the process of decomposition that occurs when organic matter is exposed to air and moisture. This process is also caused by bacteria and fungi, which break down the material into smaller pieces. Both processes are necessary for composting, which is the process of breaking down organic matter into a nutrient-rich soil amendment.