The answer is the first one because it doesn't create gases and, the third one doesn't even make any sense so its definitely not that one
You can be infected with a virus & not even know it & that is true
It is Nucleic Acids, they consist of long chains of units like the proteins, but still both are different.
Answer:
c. Ribs move out- diaphragm contracts- lungs expand- decrease intrathoracic pressure
Explanation:
