Examlex
Consumption of a public good has the characteristics of rivalry and excludability.
Earth's Concentric Zones
Refers to the internal layers of the Earth, which include the crust, mantle, outer core, and inner core, arranged from surface to center.
Mantle
The thick layer of rock between the Earth's crust and core, playing a key role in tectonic movement and heat transfer.
Core
The innermost layer of the Earth, composed of an iron-nickel alloy and divided into a solid inner core and a liquid outer core.
Lithosphere
The rigid outer layer of the Earth, consisting of the crust and the upper mantle.
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