Welcome to Academic Chemistry and DE Ocean WorldMy name is Mrs. Marquart. I have a B.S. in Chemistry and Marine Biology, as well as a Master's degree in Environmental Toxicology. I worked for the PA DEP as a Water Pollution Biologist for 6 years before returning to school to earn my teaching certification(s). I have been teaching for 9 years and have been at BASH for the last 6 years.