I want to know the answer to the following question:
What may be triggered suddenly by a spark?
All the background I'm provided with is that "Release of the energy stored during photosynthesis as heat or light may be triggered suddenly by a spark, in a forest fire, or it may be made available more slowly for animal or human metabolism, when these molecules are ingested, and catabolism is triggered by enzyme action.". Is that enough to answer the question?
Answer: yes