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.
1 Pre kindergarten: A child must be four years of age ON OR BEFORE September 1st. 2  Kindergarten: A child must be five years of age ON OR BEFORE September 1st.  First Grade: A child must be six years of age ON OR BEFORE September 1st.