Answer:
1. Life, exist 2. pre-existing cells.
Explanation:
Answer:
Y most likely represents springs.
The total volume of the gas-exchanging region in the lung is called alveolar volume.
The alveolus is an air sack-like organ in the end of the respiratory airway. The alveolus is the site where gas-exchanging happens, so only air inside alveolus that will undergo actual exchange. Air in bronchus or trachea wouldn't do exchange
Answer:
B. Polio
Explanation:
The poliovirus causes brain damage (resulting in paralysis) and muscle degeneration. You're welcome.
