Key words:

• Afterlife:

  Life after death; the belief that existence continues after physical death
• Environmental stability:

  Ensuring that the demands placed on natural resources can be met without reducing capacity to allow all people and other species of animals, as well as plant life, to live well, now and in the future.
• Euthanasia:

  From greek, eu 'good' and thanatos 'death'. Sometimes referred to as mercy killing. The act of killing or permitting the death of someone who is suffering from a serious illness.
• Evolution:

  The process by which different living creatures are believed to have developed from earlier less complex forms during the history of the earth.
• Abortion:

  When a pregnancy is ended so that it does not result in the birth of a child.
• Quality of life:

  The extent to which life is meaningful and pleasurable.
• Sanctity of life:

  The belief that all life is precious, or sacred. For many religious believers, only human life holds this special status.
• Soul:

  The spiritual aspect of a being; that which connects someone to God. The soul is often regarded as non-physical and as living on after physical death, in an afterlife.