Question

a french chemist, this man discovered that heat could kill bacteria that otherwise spoiled liquids including milk, wine, and beer. developed vaccines for anthrax and rabies. germ theory social darwinism louis pasteur florance nightingale

Explanation:

The description matches Louis Pasteur, a French chemist who discovered pasteurization (using heat to kill bacteria in liquids) and developed vaccines for anthrax and rabies. He is closely associated with the germ - theory of disease. Social Darwinism is a different concept related to applying Darwin's ideas to society. Florence Nightingale is a famous nurse, not related to these discoveries.

Answer:

Louis Pasteur