Usually they start of happy as the person begins to change later on in the relationship
But I am not sure but I think the answer is
C. Happy
Because her friends are altering and affecting her decision
Answer:
b. It keeps alveoli from collapsing with breaths.
Explanation:
Surfactants are highly surface active agents which are formed from a protein and lipid complex. It comprises of a hydrophobic and hydrophilic portion and its sole purpose is to control the tension at the air-liquid interface and thereby lower the surface tension. Surfactants are produced by the type II aveolar pneumocytes in the lungs.
Surfactants are needed in order to aid breathing and prevent straining oneself, it also prevents the lungs from collapsing during breathing, a term known as atelectasis.
The speed of an exercise has a lot to do with the intensity of cardiovascular exercise.
The more the speed of an exercise is the greater intensity of the workout is and the more you sweat. However after a certain time you get fatigued and tired out.
For example, if you had planned to do an exercise for 30 minutes and you increase the speed of the exercise then probably you might not be able to complete the 30 mins as youll get fatigued before that time due to the high intensity.
