Answer:
3) Oxygen Deficit
Explanation:
When we have less oxygen in our tissues, such as during extended rigorous exercise, lactic acid is produced (the burning that we feel in our muscles).
Menstruation? Idk if that is right, but it sounds like someone started their period.
Answer:
B
Explanation:
Self-esteem is how we precieve ourselves, and varies from person to person.
Answer:
Histamine is correct. have a nice friday :)