Answer:
The 3rd Option
Explanation:
Simple for this question, C: an investigation because it uses only observations.
Answer:
The positive control is an experiment that involves the repetition of the testusing working treatment. ... This helps the analyst compare the result to a new experiment against an already results that are already known. Negative controls are always used during microbiology testing.
Tolerance can in fact cause an overdose, because the greater tolerance you can get the more of a certain substance your body will need eventually leading your body to take more than it can handle leading to overdose and death.
Answer:
I think this is how it goes
1. Nose/mouth
2. Pharynx
3. Larynx
3.Trachea
4.Bronchi
5.Alveoli
6.Heart
7.Blood Vessels
Explanation: it starts out from the nose then continues down to through the lung system then the heart to the blood stream
