Bacteria in our gut help to protect us by crowding out some of their dangerous relatives that can cause disease. Other good bacteria have been used in medicine to create antibiotics, and others still are used in food production to make fermented foods (think sauerkraut, yogurt, kimchi and kombucha.)
Answer:
1. DNA and RNA I'm pretty sure
Molecule, organelle, cell, tissue, organ, organ system, organism, community, population, ecosystem, biosphere
It's fused into natural mixes by autotrophs and enters the dirt when living beings die.
