Question 34 of 34 Structure A in the diagram below is a muscle that contracts during inhalation
What is this structure called?
o
A Alveolus
O B. Diaphragm
O C. Bronchus
D. Trache

B. diaphragm

Explanation:

this structure flutters and causes the chest cavity to largen

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.

garbage disposal because lysosomes dispose of old cell parts like garbage disposals dispose of old food.