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11-W/4 = 1+W

11-W = 4+4W      (Multiply both sides by 4) 

11 = 4+5W          (Add W to both sides) 

7 = 5W                ( Subtract 4 from both sides)

W = 7/5               (D...

Trypsin is a protease that acts in the small intestine to digest proteins. The advantage of it being produced inactive form in the pancreas is so that it doesn't digest pancreatic proteins. This means it ...

Volcanic hazards have many effects that can be split into two catagories: those affecting people and those affecting the environment. Volcanoes can be made through both constructive and destructive fault ...

Plants - harness light energy into chemical energy of ATP (photosynthesis) Eukaryotes- extract high energy electrons from fuels (mostly sugars) to synthesise ATP. This process is called oxidative ...