Antimicrobial agents are agents that helps fight against microorganism. The couple occur in natural or synthetic form.
Antibiotics are synthesis from natural source such as mold, bacteria to fight against various diseases.
Cephalothin produce by mold is an example of a natural antimicrobial that is produce by mold to kill microorganism causing various illnesses it could be further process into a synthetic antimicrobial agent and can be used as antibiotics.
An oil boom helps contain the oil so that it is easier for them to skim it off of the water. They aren't meant to clean up oil, only to contain the oil since it does not sink or mix with water.
