Answer:
That would be hard because the black Death was a long time ago
Explanation:
Answer:
move air towards the lungs and warm, moisten, filter
Explanation:
the upper respiratory system incldues your mouth, nose, trachea, and a portion of your lungs
I believe you are asking about the "triangle" we were tought a simple triangle. Cells at the bottom because there are the most of them, tissues next, organ next, and organ system at the top. So I believe the answer you are looking for is Organ System.
Answer: It all depends on your health, The healthier you are that means you will get more sleep, Less Healthy = Less Sleep
Explanation: