________ A serious MRSA infection is generally treated with one strong antibiotic

The release of an egg from the ovary is called:

a. the preembryonic stage. c. menstruation. b. ovulation. d. gestation.

3. The exchange of oxygen and carbon dioxide between the blood and the cells of the body is called:

A) internal respiration. B) external ventilation. C) external respiration. D) internal ventilation.