Dr. Green and Dr. Xiao work in our biotechnology R&D department. As a , Dr. Green studies the life functions of plants and animals. Dr. Xiao examines the chemical makeup of living things in her role as a .

Ana is a hospital researcher. she wants to preserve organs for further study in a chemical that is called formalin. prior topreserving the organs, ana wants to familiarize herself with the hazards of using formalin. ana should consult formalin'sa. materials safety data sheet.b. date of expiration.c. date of manufacture,d. additional laboratory uses,