1. 
Global warming 1
  is causing changes 2 
  in the sea level. 4 
Scientists 1
  have recently discovered 2
  that the sea level 3
  long the coast 4
  of Maine 3
  has risen 30-50cm 2 
  and along the coast 4 
  of Nova Scotia 3
  as much as 60cm s 4
  since 1750 AD. 4
They 1 
  were able 2 
  to go back 3
  in time, 4
  so to speak, 3
  by studying the evidence 4 
  of change using accurate sea-level estimations 4
  based on analyses 5
  of salt marsh peat. 4
   
"This 1 
  is the first time 2 
  that the rise has been adequately dated. 6
  
This 1 
  is also the first time 2
  that _________________________, 6
  several hundred miles apart," 4
  explained a researcher 5
  from the University 4 
  of Plymouth in the UK. 4
(a) the existence 1  
  of salt marsh peat 4 
  has been recorded 2
(b) we 1
  have proven 2
  different coastal lands are sinking 3
(c) the same kind 1
  of ancient ruins 3
  have been found intact 2
(d) it 1
  has been documented 2
  and verified 2 
  in two locations 4
-----------------
1.
 Global warming 1
  is causing 2 <=
  changes 3 <=
  in the sea level. 4
 
 Scientists 1
  have recently discovered 2
  that the sea level 3
  long the coast 4
  of Maine 3
  has risen 30-50cm 2
  and along the coast 4
  of Nova Scotia 3
  as much as 60cm s 4  => 2
  since 1750 AD. 4
 
 They 1
  were able 2
  to go back 3
  in time, 4
  so to speak, 3 => 4
  by studying the evidence 4
  of change 3 <= //
  using accurate sea-level estimations 4 => 5
  based on analyses 5
  of salt marsh peat. 4 =>3
   
 "This 1
  is the first time 2
  that the rise has been adequately dated. 6
 
 This 1
  is also the first time 2
  that _________________________, 6
  several hundred miles apart," 4
  explained a researcher 5
  from the University 4
  of Plymouth in the UK. 4
 
 (a) the existence 1 
  of salt marsh peat 4 => 3
    has been recorded 2
 
 (b) we 1
  have proven 2
  different coastal lands are sinking 3
 
 (c) the same kind 1
  of ancient ruins 3
  have been found intact 2
 
 (d) it 1
  has been documented 2
  and verified 2
  in two locations 4    
     
   
 
 
   
      
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               {어구번호: 주어구1, 술보어구2, 목적어구3, 부사구4, 분사구5, 관계사구6}
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