Answer:
Coal and oil (if there are two answers)
the nitrogen cycle involves decompisition. and the waste from the animals is then turned into nitrogen.
Metabolism is the chemical processes that occur within a living organism in order to maintain life. Have a good day! Also, any answer that says, ‘Here is the link to your answer: (link)’ DO NOT CLICK ON IT!!
The peas haven't start germinating, which means no leaves. They can't undergo photosynthesis to produce oxygen. At this stage they are still undergoing respiration, which produce carbon dioxide.
