Name the sciences developed in ancient Egypt that contributed to the embalming of the withered

Name the sciences developed in ancient Egypt that contributed to the embalming of the withered and the observation of the stars.

It was chemistry and astronomy. In ancient times, the Egyptians already possessed extensive knowledge. The priests were the keepers of such knowledge. They knew how to follow the stars and predict the future. Also, the priests knew chemistry and medicine very well. They knew how to carry out complex operations. One of their main tasks was the burial of the deceased kings for which knowledge in the field of chemistry was needed. Thus, the priests mummified the body of the deceased ruler, after which he was buried in a tomb.