Refer to the information provided in Figure 18.4 below to answer the questions that follow. 
Figure 18.4
-Refer to Figure 18.4. The wealthiest fifth of families earned ________% of income in Outland.
Definitions:
Fibrous Structure
Refers to the composition or arrangement of fibrous tissues or materials, often relating to the physical makeup of biological entities or materials.
Cytoplasm
The gel-like substance inside a cell that surrounds the nucleus and is where most cellular activities occur.
Substantia Nigra
A region of the brain that plays an important role in reward, addiction, and movement; known for its high concentration of dopamine-producing neurons.
Red Nucleus
A structure in the brainstem involved in motor coordination and the control of limb movements.
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