Ned is designing an experiment to test which hand sanitizer kills the most E. coli bacteria. In order for Ned's results to be va

Question

2 years ago

10

lid, what must he do?

2 answers:

Kay [80] · Answer 1 · 2022-04-29T14:46:02+03:00

Kay [80]2 years ago

7 0

Have a control. You have to have something to compare your experimental results or else your results could be random chance.

kondaur [170] · Answer 2 · 2022-04-29T16:48:13+03:00

7 0

Test the hand sanitizers on bacterial colonies that are kept in the exact same environmental conditions, such as temperature and light level