Give the scientific terminology for each discription

1The chemical synthesis process in plants in which CO2 plays a vital role
2Manure that comes from plants that are planted,but not harvested
3The name of the first step in the ostwald process

2 answers

http://learn.eartheasy.com/2011/09/plant-a-fall-cover-crop-to-improve-your-garden-soil/

http://en.wikipedia.org/wiki/Ostwald_process

http://www.ext.colostate.edu/mg/gardennotes/141.html
#1. photosynthesis
#2. Several will fit but I go with "organic fertilizers". Surely you have this in your notes or text.
#3. oxidation