All of the following are functions of human skin, except a. absorbing mineral reserves, water, and waste. b. releasing excess heat to regulate body temperature. c. protecting the skin from pathogens. d. gathering information about the environment.

you should wear a lead protective shield when having teeth x-rays

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-lavira : )

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

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