| Rocky Mountain spotted fever |
a rare disease transmitted to humans through the bites of ticks; characterized by small pink spots on the wrists and ankles that spread to other parts of the body, become larger, and bleed
출처: www.american-depot.com/services/resources_gl_r.asp
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| Rock |
Any naturally formed, firm and coherent aggregate or mass of mineral matter that constitutes part of the Earth's crest.
출처: www.modernhumanorigins.com/r.html
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| rock salt |
large deposit of salt minerals
출처: www.msnucleus.org/membership/html/k-6/rc/dictionar...
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| Rock |
a solid mixture of minerals and chemicals, the hard part of the Earth's crust
출처: www.msnucleus.org/membership/html/k-6/rc/dictionar...
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| Rock |
Aggregate of minerals that forms an appreciable part of the lithosphere.
출처: imnh.isu.edu/digitalatlas/glossary/letter.asp
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