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The type of rock that makes up the lunar highlands is
Osteoporosis
A disease characterized by decreased bone density and increased risk of fractures.
Calcium
A chemical element symbolized by Ca, it is essential for living organisms, particularly in cell physiology and bone formation.
Keratin
A horny, water-insoluble protein found in the epidermis of vertebrates and in nails, feathers, hair, and horns.
UV Radiation
Ultraviolet radiation, a type of energy emitted by the sun that can cause skin damage and cancer in living organisms.
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