The table displays the percentage of pregnancies in four groups of women. Each group had used a different contraceptive method. Which contraceptive method was the least effective?
- Abarrier
- Bchemical
- Cnatural
- Dsurgical
Biology 0610 · IGCSE · Sexual reproduction in humans
The table displays the percentage of pregnancies in four groups of women. Each group had used a different contraceptive method. Which contraceptive method was the least effective?