Question 52 From the diagram, what is the layer that represents the letter "U? Structure of the Earth chemical properties) (Layer's classified by (Layers classified by physical properties gas mostly water rigid 300 miles 400 m B -4000 feet (4267 m variable thickness -21 mi (36 km) consists mostly of granitic and mano silicates - mi (100 km) D -4.30 i 1700 km) nd cosists of mosty ultramane silicates 1800 m (200m liquid FF 3200 mi 106 ) consists of mostly tronnickel, and sulfur rigid "G 3.60 mi) Inner core Crust Mantle Outer core MacBook AL un re