Answer:
1) circulatory and respiratory
2) endocrine
3) circulatory
4) circulatory and nerves
Explanation:
I think these are right. Sorry if they are not.
Washing your hand before every procedure; C
Answer:
The answer is B (connected to a healthy state of mind)
Robert Hooke and Antoni Van Leeuwenhoek were credited for discovering the microorganisms.