<｜begin▁of▁sentence｜>### Instruction:
As an environmental engineer, you have been tasked with creating a visualization of pollutant levels that transitions smoothly from high to low concentrations, with the high concentration represented by a red color, moderate concentration by green, and low concentration by blue. The visualization tool you are using is igraph, and you need to create a palette with 256 color variations distributed according to these specifications.
### Response:
from igraph.drawing.colors import AdvancedGradientPalette

# Create an advanced gradient palette with specific colors and indices
colors = ['#FF0000', '#00FF00', '#0000FF'] # Red, Green, Blue
indices = [0.0, 0.5, 1.0]  # Start, Middle, End

# Create an AdvancedGradientPalette with 256 colors
palette = AdvancedGradientPalette(colors, indices, n=256)

# Show the palette
print(palette)
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