three domains , archae- 1st appeared, prokaria- not closed by nucleus and eukaria closed by nucleus
Answer:
Nitrogen fixing bacteria in the soil and within root nodules of some plants convert nitrogen gas on the atmosphere to ammonia.
Nitrifying- bacteria convert ammonia to nitrites.
Carbohydrates
I'm not sure but....Please correct me if I'm wrong!! :)
Hydrophilic heads, hyrdophobic tails. Heads are made of phosphate and the tails are made of lipids.
