Science

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commencer à apprendre

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question		réponse
is a skull a mineral commencer à apprendre		no its manmade
Is quartz a mineral commencer à apprendre		yes
what are minerals used for by humans commencer à apprendre		zippers, pencils, makeup
is wood a mineral Eating apples is very healthy. commencer à apprendre		no Comer manzanas es muy saludable.
what is a mineral commencer à apprendre		1. naturally organic 2. it is inorganic 3. it is a solid 4. has a crystaling structure 5. definite chemical composition
is diamond manmade? Do you know that I like you? commencer à apprendre		no its a mineral ¿Sabes que me gustas?
what is an ore commencer à apprendre		mineral deposits from which metals and nonmetals can be removed from profitably
what is a metal commencer à apprendre		1. has a shiny surface 2. mineral resource 3. good heat and light conductors 4. bend easily
what does a nonmetal have that a metal does not have commencer à apprendre		a dull surface,
what is a native element commencer à apprendre		metallic mineral
what exists in the earths crust commencer à apprendre		native element
what is contact metamorphis commencer à apprendre		when magma comes into contact with existing rock
what is a vein commencer à apprendre		when new minerals precipitate from solution and form a narrow zone of rock
define lode commencer à apprendre		when thick mineral veins form in a relatively small region which is the ore deposits
a deposit that contains a valuable mineral that has been concentrated by mechanical action commencer à apprendre		this is a placer deposit
what is a gemstone commencer à apprendre		a mineral that can be used as jewelry or an ornament when its cut and polished
what is subsurface mining commencer à apprendre		miners use this technique to find underground mineral deposits
what is surface mining commencer à apprendre		when the overlying rock material is stripped away to reveal the mineral deposits

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