Darkness has a negative impact on photosynthesis.
Light is necessary for photosynthesis, a process that produces oxygen.
Darkness has a negative impact on the process that produces oxygen.
Darkness has a negative impact on which process of a plant?
Options:
  * slow and inefficient
  * chemical changes
  * circulatory systems
  * most organisms
  * fossil fuels
  * Abnormal cell growth
  * deoxyribonucleic acid
  * Oxygen production