1. Central Theme: Greenhouse Effect2. Branches:Greenhouse Gases: (Carbon Dioxide, Water Vapor, Methane)EnvironmentRadiationEarth's SurfaceAbsorptionHeatLayout:Greenhouse Effect connects to:Greenhouse Gases (Carbon Dioxide, Water Vapor, Methane)Radiation (which is absorbed by the Earth's Surface, creating Heat)Environment (as the overall system impacted)