Answer:
the earth
Explanation:
the rotation of the earth day,day and night
Answer:
C
Explanation:
I am taking the test right now and it seems to be the most valid answer
Always go with the second greatest. it has more of a consistent vibe so personaly id go with C
Answer:
a
Explanation:
Tidal volume (TV) is the volume of oxygen that enters the lungs (inspiration) through normal breathing. It is measured per kg of body mass.
It is also measurement applied by a ventilator machine. The machine delivers oxygen and the amount delivered is calculated as tidal volume.
'Remaining in the lungs after forced expiration' is called Inspiratory Reserve Volume (IRV)
'Forcibly expelled after normal expiration' is called Expiratory Reserve Volume (ERV)