text: import matplotlib.pyplot as plt
  fig, ax = plt.subplots()
  
  # Add the time-series for "relative_temp" to the plot
  ax.plot(climate_change.index, climate_change['relative_temp'])
  
  # Set the x-axis label
  ax.set_xlabel('Time')
  
  # Set the y-axis label
  ax.set_ylabel('Relative temperature (Celsius)')
  
  # Show the figure
  plt.show()