23 i am pretty sure i am studying that right now in science so
Provide commercial/recreational opportunities without adversely impacting wild populations (i.e. overharvest).
Speed up chemical reactions (Catalysts)
Biology is the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behavior, origin, and distribution.
This is basically the definition of biology, so you may need to add a little more detail. This is a great way to get it started though!!!
Hope this helps!!
