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Practice Reading: Fill in The Blanks (Drag & Drop) ID: #35449 Light pollution
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The  widespread  use  of  artificial  light  in  modern  societies  means  that  light  pollution  is  an  increasingly  common  feature  of  the  environments  humans  inhabit.  This  type  of  pollution  is    high  in  coastal  regions  of  tropic  and  temperate  zones,  as  these  are  areas  of  high  rates  of  human  population  growth  and  settlement.  Light  pollution  is  a  threat  for  many  species  that  inhabit  these  locations,  particularly  those  whose  ecology  or  behaviour  depends,  ,  on  natural  cycles  of  light  and  dark.  Artificial  light  is  known  to  have  detrimental  effects  on  the  ecology  of  sea  turtles,  particularly  at  the  hatchling  stage  when  they  emerge  from  nests  on  natal  beaches  and  head  towards  the  sea.  Under  natural  conditions,  turtles  hatch  predominantly  at  night  (although  some  early  morning  and  late  afternoon  emergences  occur)  and  show  an  innate  and  well-directed  orientation  to  the  water,    mostly  on  light  cues  that  attract  them  toward  the  brighter  horizon  above  the  sea  surface.  Artificial  lighting  on  beaches  is  strongly  attractive  to  hatchlings  and  can  cause  them    the  sea  and    with  their  ability  to  orient  in  a  constant  direction.  Ultimately,  this  disorientation  due  to  light  pollution  can  lead  to  death  of  hatchlings  from  exhaustion,  dehydration  and  predation.

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