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                  SWIMMING   WAS INCLUDED    in  the  first   modern  Olympic  games  in  1896   and  diving  events  were  added  in 1904.Swimming  is   both an  individual   and  a  team  sport  and  races  takes  place  over a  predetermined     distance in  one of  the  four   major  categories of  stroke -free style,butterfly,breaststroke,and  backstroke. Competition  pools  are clearly  marked  for  racing  and  anti  turbulence  lane  lines  are  used   to  separate  the  swimmers and  help  keep  the   water  calm.The  first  team  or   individual  to  finish the  race ...

BLOOD      IS    RED    ,because     all  its   cells are  packed   called   with  a  red-colored   substance  called       hemoglobin.Using  this,  the   red  blood cells  pickup   vital    oxygen  and  deliver  it  to  the  body's  cells.To   achieve  this  and  the  other   roles,  such  as  removing  waste,  blood is  pumped  along   blood  vessels  by  the  heart. BLOOD       COMPOSITION -  IF     Blood   is  poured  into  a  glass tube  and   spun  in  a  centrifuge     ,its  main  components  s...

ACRYLICS   PAINT   IS  MADE  BY  MIXING  PIGMENTS with  a   synthetic   resin  .It  can  be  thinned  wi t h  wate r    but  dries   to  become  water  insol u bl e.Acrylic s   are  applied  to  many  surfaces  ,such  as  paper  and  acrylic -primed  board   and  canvas.A  variety  of  brushes ,painting knives  , rollers,ai r  b rushes,plastic scrapers  are  used  in   Acrylic  painting.The  v ersatility   of  Acrylics  make  them   suitable   for  a  wide   ran  of  techniques   .They  can   be   used   op a qu ely  or  by  adding  water-  in  a  transparent , wat...

A hazmat suit is a piece of personal protective equipment that consists of an impermeable whole-body garment worn as protection against hazardous materials. Such suits are often combined with self-contained breathing apparatus to ensure a supply of breathable air. Hazmat suits are used by  firefighters  ,paramedics  researchers, personnel responding to toxic spills, specialists cleaning up contaminated facilities, and workers in toxic environments. Hazmat suits are barrier formed of plastic, fabric and rubber, along with an independent source of oxygen. They protect workers by separating them from their hazardous environment. Simpler suits can be  (adsbygoogle = window.adsbygoogle || []).push({});   to protect against harmful liquids, but more advanced suits can become completely airtight to defend against airborne contaminants and toxic chemicals. This versatility has meant that hazmat suits can be used by the military, in industry and...

IN  1998,THE  FIRST  component  of   the  International  space   station  (ISS)  were  launched  from  Russia  and   the  US.The  ISS  will  provide   a  unique  place  to  study    the  Earth  ,  and  to  see   ,how  the  sun;s violent   eruptions    affect  the   operation  of  the communications   satellites  ,  and  the weather  on  the   Earth .The  effect  of  gravity    inside  the  station    will  be   minuscule   and  scientists   will   be able     to  study  a  myriad  of  subtle    biological  ,physical,...

The   Urogenital  system  mainly  related  to two  types  of functions.One  is related  to  the  kidneys that maintain  the  volume and  composition   of  body fluids   within   very  narrow  limits.Second  is related  to   the sex organs that facilitates  reproduction.Kidneys  help  in maintaining   the body's  internal   environment   in  physiological   state.A  healthy  kidney performs  regulation  of  water   in  the body, maintains normal acid  /base equilibrium,eliminates metabolic waste products  and also  maintains  the retention  of  vital  substances.The   is why  the kidney  receives   the  one  quarter  of the  cardiac   output...

Papua New Guinea, certainly one of the last great areas of land on Earth to remain partially unexplored; this remarkable remote landscape still remains a place of great wonder and deep mystery.   Exotic birds, plant life and rare animals, unique extraordinary art and languages and colorful warriors  are marvelous. The island of New Guinea was named after the country of Guinea in Africa.   Papua New Guinea consists of the eastern half of the island of New Guinea – the islands of New Britain, New Ireland, Bougainville and around six hundred smaller islands, north of Australia.New Guinea is one of the largest islands in the world.   The Kuk Early Agricultural Site, inscribed on the World Heritage List in 2008, consists of swamps in the highlands of New Guinea. It has been discovered that the land has been drained, possibly for as long as ten thousand years. Evidence of agriculture dates back to six and a half thousand years ago.  Papua New...