Final answer:
The body cools rapidly after death during the first 12 hours and the cooling rate slows down after that.
Step-by-step explanation:
After death, the body undergoes a process called algor mortis, which is the cooling of the body. In the first 12 hours after death, the body temperature can drop at a rate of about 1.5 degrees Celsius per hour. However, it's important to note that this rate is not constant and can vary depending on factors such as the ambient temperature and the body's immediate environment. After the initial 12 hours, the cooling rate slows down significantly and can continue for up to 24-36 hours.