The answer is ATP molecules being produced, this happens in light and dark.
All of the other options are either directly related to light/photosynthesis or are needed to complete it.
Water enters the soil in a process through infiltration
Chlorinated hydrocarbons is the group these pesticides belong to
Because it's extremely dangerous and kills things
Ans.
Nitrogen fertilizers are commonly used by farmers to increase crop production. Ammonium is the main component of nitrogen fertilizer, as it is easily assimilated by plants and provides nitrogen to them, while nitrate gets easily lost from the soil. During nitrogen cycle, ammonium is converted into nitrate by nitrification. So, nitrification inhibitors are used with to slow down the conversion of ammonium to nitrate to provide nitrogen for longer time.
Thus, 'to increase crop production, nitrification step of nitrogen cycle is preferred by farmers to block, or slow down.'