reproduction ꨄ

• the period of time during which a child changes into an adult is called....

  adolescence
• what does the ovaries contain?

  egg cells
• when boys are growing up do their breasts start to develop?

  no
• how can pregnancy be avoided


  it can be avoided by using contraception
• how many days does the menstrual cycle usually last for?

  28 days
• gestation is the time from fertilisation until birth

• what causes the changes that happens during adolescence

  sex hormones
• where are sperm cells produced in?

  in the testes
• what are oviducts?

  tubes that take the egg toto the uterus
• what is the female gamete called?

  egg
• what is a period

  the loss of the uterus lining through the vagina
• what happens during hetero sexual intercourse

  the penis releases semen into the vagina
• what is implantation?

  when an embryo attaches to the lining of the uterus