R Ram Sharma 🎓 Coach ⭐ 193.88K Points 📊 Biology Q. The nitrogen in the ecosystem is circulated by- (A) Fungi (B) Protozoa (C) Earthworms (D) Bacteria 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (D) Bacteria You must be Logged in to update hint/solution 💬 Discussion 💬 Comment