Chemical Contraception
Introducing the basic principles upon which all chemical methods of contraception work, and how the methods of delivery vary. Biology - Being Human - Learning Points. There are many chemical methods designed to prevent pregnancy. Chemical contraceptives use artificial hormones to manipulate a woman's menstruation cycle. The combined oral pill contains estrogen and progesterone, which prevents ovulation and is 99% effective. The progesterone-only pill can be slightly less effective than the combined pill, but has lower risk of side effects. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.
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