Please help asap! What does aerobic mean?

Question 1 options:

Cardio Fitness

Anaerobic fitness

Strength training

Walking

How much blood does a healthy agult normally contain

When a person undergoes root canal treatment or another endodontic treatment: [select all that apply] a.) the inside of the tooth is carefully cleaned and disinfected. b.) air is forced into the canal to stop bleeding. c.) the inflamed/infected pulp is removed. d.) the inside of the tooth is filled and sealed with a rubber-like material called gutta-percha

Acne is caused by a. a strict diet b. eating at night c. hormones d. dry skin select the best answer from the choices provided. a b c d