Answer:
17. D) Hypothesis
18. Not accurate but it is precise
19. D) precision
20. A) quantitive observation
21. B) Control
22. Volume.
hope this helps!
Answer:respiratory system
Explanation:The primary function of the respiratory system is to deliver oxygen to the cells of the body's tissues and remove carbon dioxide, a cell waste product. The main structures of the human respiratory system are the nasal cavity, the trachea, and lungs
There are many answer you have to be specific