Question

which scientist disproved the idea that life comes from nonlife?
anton van leeuwenhoek
louis pasteur
robert koch
paul ehrlich

Explanation:

The idea that life arises from non-living matter is called spontaneous generation. Louis Pasteur designed experiments (using swan-neck flasks) that proved microorganisms only grow from pre-existing microorganisms, disproving spontaneous generation. Anton van Leeuwenhoek is known for improving microscopes, Robert Koch for germ theory postulates, and Paul Ehrlich for work on immunology and chemotherapy.

Answer:

B. Louis Pasteur