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 and elementary school teachers typically do the following: 1  Create lesson plans to teach students subjects, such as reading, science, social studies, and math. 2  Teach students how to study and communicate with others. 3  Observe students to evaluate their abilities, strengths, and weaknesses.