4 is true with question you asked
Answer:
C
Explanation:
Recycling a metal can so it can be reused.
Answer:
nucleus
Explanation:
eukaryotic has a nucleus, prokaryotic does not
Answer:
Nitrogen is the most commonly limiting nutrient in plants. Legumes use nitrogen fixing bacteria, specifically symbiotic rhizobia bacteria, within their root nodules to counter the limitation. Rhizobia bacteria convert nitrogen gas (N2) to ammonia (NH3) in a process called nitrogen fixation.
