1. Students should be able to evaluate the different hormonal and non- hormonal methods of contraception.
  2. Fertility can be controlled by a variety of hormonal and non-hormonal methods of contraception.
  3. These include:
  • oral contraceptives that contain hormones to inhibit FSH production so that no eggs mature
  • injection, implant or skin patch of slow release progesterone to inhibit the maturation and release of eggs for a number of months or years
  • barrier methods such as condoms and diaphragms which prevent the sperm reaching an egg
  • intrauterine devices which prevent the implantation of an embryo or release a hormone
  • spermicidal agents which kill or disable sperm
  • abstaining from intercourse when an egg may be in the oviduct
  • surgical methods of male and female sterilisation.

Explain why data is needed to answer scientific questions, and why it may be uncertain, incomplete or not available. Outline a simple ethical argument about the rights and wrongs of a new technology.,

Describe and explain specified examples of the technological applications of science. Describe and evaluate, with the help of data, methods that can be used to tackle problems caused by human impacts on the environment.