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In nonkeratinized stratified squamous epithelial tissue, the cells in the superficial layers are dead.
Hematite
A reddish-black mineral composed of iron oxide, often used as an iron ore.
Basalt
A dark, fine-grained volcanic rock that is low in silica content.
Orbiting Spacecraft
Orbiting spacecraft are human-made vehicles or satellites that revolve around Earth or other celestial bodies, utilized for communication, research, and observation.
Returned Samples
Physical specimens that have been collected from specific locations and returned to a laboratory or facility for analysis.
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