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Arturiano [62]
3 years ago
5

I need answers ASAPPPP!!!!!!!!!!!!!!!!!please

Biology
1 answer:
NemiM [27]3 years ago
7 0

Answer:

1st question is the rinsing hands for 20 sec with soap bc it has the less amount of substance left on it.

2nd question is to get more effective results

3rd is human error, and make sure to pay attention bc that messes up your results

Explanation:

hope this helps

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