How did Spallanzani modify Needham's experiment to gain support for biogenesis?
Responses
A He used flasks with a curved neck.He used flasks with a curved neck.
B After boiling the broth, he sealed the containers.After boiling the broth, he sealed the containers.
C He boiled the broth after sealing the containers.He boiled the broth after sealing the containers.
D He created a vacuum to remove all the air form the containers.