A diagram of the interior of Jupiter is shown below, with layers labeled A-D. 
Describe what each of the four labeled layers is made of.
Definitions:
Health Care Costs
The expenses associated with medical services, including treatments, medications, hospital stays, and preventive care measures.
Industrial Revolution
A period of major industrialization from the late 18th to early 19th century that transformed predominantly agrarian, manual labor-based societies into industrialized, machine-driven ones.
Thomas Robert Malthus
An English economist and demographer, known for his theory that population growth will outpace agricultural production, leading to widespread poverty.
Birth Rate
The number of live births per 1,000 people in a population over a given period, commonly calculated on an annual basis.
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