1. Nitrogen Fixation: Prokaryotes are the only organisms capable of converting atmospheric nitrogen (N2), which is unusable by most organisms, into usable forms like ammonia (NH3) and nitrates (NO3-). This process, called nitrogen fixation, is essential for plant growth and ultimately, for the entire food web.
2. Decomposition: Prokaryotes, particularly bacteria, are the primary decomposers in most ecosystems. They break down dead organic matter, releasing nutrients like carbon, nitrogen, phosphorus, and sulfur back into the environment. This makes these nutrients available for other organisms, completing the cycle.
Let me know if you'd like more detail on either of these roles!
