How Do Organisms Reproduce

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10 Sexually Transmitted Disease (STD)



The diseases which are spread by sexual contact with an infected person are called sexually transmitted disease (or STD).


Some of the sexually transmitted diseases are:

  • Gonorrhoea,
  • Syphilis, and
  • AIDS (Acquired Immune Deficiency Syndrome).


Gonorrhoea and syphilis are caused by bacteria.


AIDS: AIDS disease is caused by a virus called HIV (Human Immunodeficiency Virus). AIDS damages the body’s immune system so that the body becomes weak and cannot protect itself against infection. So AIDS is a very dangerous disease which leads to death.

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