Answer: This experiment has two factors.
Explanation:
This experiment has two factors in it. These two factors are: One is normal/ vegetarian diet and other is unrestricted /restricted salt diet.
The condition that is kept in the experiment are kept varying and the results are recorded in order to check whether vegetarians can lower blood pressure by their diet or not.
So, here in the experiment there are two factors on which the experiment is based on.
It depends on the context; it does allow gas exchange to occur, however gas exchange occurs in the capillaries of the alveoli.
Note:
<em>The upper airway not only provides a passage for air to be breathed in and out of the lungs, but it also heats, humidifies and filters the air and is involved in cough, swallowing and speech. Air goes to the lungs where gas exchange will occur. </em>
If you are still confused try looking up gas exchange diagrams for more information.
TLDR: Disagree; it does allow oxygen to flow into the lungs as the upper respiratory tract is a passageway to the lungs. However, the upper respiratory tract is NOT where gas exchange occurs because the lower respiratory tract holds the lungs which allow for gas exchange.
Changing the frequency by adding another day of walking.
Changing the intensity by walking faster or adding some running intervals.
Changing the time spent walking each workout day.
Changing the type of workout by swimming, cycling, or running.
