Question

What was the variable in Pasteur's experiment?
A. meat sealed in jars that didn’t have contact with air
B. a swan neck flask that prevented air from getting in
C. uncovered meat that had contact with air
D. a straight neck flask to allow air to get in

Answer 1

Answer:

The answer is

B.) A swan neck flask that prevented air from getting in

Explanation:

I just took the test

hope this helps :)

Answer 2

Answer:

It is D.  a straight neck flask to allow air to get in

Explanation:

I took the test im on k12 its right.