A biofilm is any group of microorganisms in which cells stick to each other and often also to a surface. These adherent cells become embedded within a slimy extracellular matrix that is composed of extracellular polymeric substances (EPS).
Career Requirements. Kindergarten teachers in public schools are required to have at least a bachelor's degree in education and teacher certification for the state in which they work. Certification typically requires candidates to complete student teaching requirements and pass any required professional exams.
Kindergarten teachers are often the first experience parents have had with someone in the education system, so it requires a great deal of patience to explain the way things work and ease their minds when they are upset or frustrated. Sometimes, dealing with the school system as a whole can be strenuous.