Final answer:
Formalin is commonly used for preserving tissue specimens and embalming bodies in the veterinary hospital.
Step-by-step explanation:
Formalin is most commonly used for preserving tissue specimens and embalming bodies in the veterinary hospital. Formaldehyde, the main component of formalin, coagulates proteins and kills bacteria, preventing tissue decay. It is also used to sterilize soil and other materials.