A conversion factor is ALWAYS equal to 1 :)
Because ecosystems don't change over one day, they change over a long period of time. Plus, something that happens may be because of more than just one change.
1) Decomposition reactions. In this type of reaction, a compound is broken down into simpler compounds.

Option B is a decomposition reaction
B) ____ KClO3 → ____ KCl + ____ O2