Block scope

const logVisibleLightWaves = () => {
  let lightWaves = 'Moonlight';
  let region = 'The Arctic';

  // Add if statement here:
  if (region === 'The Arctic'){
    let lightWaves = 'Northern Lights';   //let keyword is used, so it will not overwrite the value Moonlight
    console.log(lightWaves)  //prints Northern Lights
  }
  console.log(lightWaves);   //prints Moonlight

};

logVisibleLightWaves(); //call the function above

console.log(lightWaves); //However if want to print the variable that is local (block scope) for both values, then it will prompt error as it cannot be accessed