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
Answer:
I'm pretty sure the answers for this is D, C, and B.
These are all types of cake.
The answer is D. Contain chlorophyll