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.
Individuals skilled in a foreign language who have a passion for helping others learn might want to consider becoming a bilingual teacher. Teachers in this field need at least a bachelor's degree and must pass a teacher certification exam. Bilingual certification also might be an option. Bilingual teachers typically have two paths available to them: teaching a foreign language to English-speaking students or teaching English to non-native speakers.