| A | B |
| optimal | the best or most suitable |
| deplete | to reduce the amount of something that is present or available |
| degrade | to treat someone without respect and make them lose respect for themselves |
| deterioration | worsening |
| fertility | the birthrate of a population |
| reproductive health and rights | basic right of all couples and individuals to decide freely and responsibly the number, spacing and timing of their children and to have the information and means to do so, and the right to attain the highest standard of sexual and reproductive health |
| sterilization | the act of making a person or animal unable to produce babies |
| contraception | the practice of preventing a woman from becoming pregnant when she has sex, or the methods for doing this |
| demographic | information about a group such as the people who live in a particular area |
| fertility | the ability of a person, animal, or plant to produce babies, young animals, or seeds |