What does excess postexercise oxygen consumption represent? - the amount of oxygen equal to the oxygen already used - amount of oxygen needed for aerobic activity to accomplish the same amount of work - the difference between the amount of oxygen needed for totally aerobic muscle activity and the amount actually used - the amount of oxygen taken into the body immediately after the exertion

Option (3).

Explanation:

Excess post exercise oxygen consumption may be defined as the increase in the rate of the oxygen after the strenous exercise. This also explains the amount of the aerobic exercises.

The excess post exercise oxygen represent the actual difference between the the amount of the oxygen that are needed for the total aerobic muscle activity and the amount of the oxygen actually used.

Thus, the correct answer is option (3).

for me i have felt invisible when i was clearly struggling,or,i made a great achievement ,and,nobody took to notice me either because they just didn't see it,or,people just turned their back on me.i can see a person being invisible by choice,or,without choice like i did.the people who are invisible by choice don't try to talk to people,don't try to make friends,and,keep to themselves.i haven't been one of those people so i couldn't give you a reason.

hope this and can i get bainliest my dude : d