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a team of geologists working in a mountainous location found four materials in the region. classify the materials as minerals or rocks based on their
descriptions
rock
mineral
description
rock or mineral?
material a is transparent and
made up of bluish crystals,
with all specimens having the
same atomic structure.
material b appears to be composed
of grains of sand and tiny shells.
material c is dark and metallic
the whole specimen of material c
is made up of the same group of
elements
material d has a porous
appearance, with each specimen
exhibiting a different atomic
structure
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a and c and b rock

a and c and d a mineral

Explanation:

a is a metamorphic rock and a crystal  and crystals are mineral

b is Sedimentary rock

c is scandium to anywhere from Copernium and scandium Copernium are found in ores and ore are rooks with mineral and metal

d can be calcium sodium phosphorus give me brainliest please

Material A is mineral, material B is a rock, material  C is  a mineral and material D is a rock.

Explanation:

A mineral is a natural substance that generally is solid while rocks are made of a combination of different minerals, besides rocks are characterized by its texture, origin and composition while minerals are characterized by its hardness and color.

According to this definition we can appreciate that material A is only made of one material and it is characterized by its color so we can conclude that it is a mineral. Material B is composed by two materials so it is a rock. Material C is characterized by its color and appearance and it is made of the same elements, with this information we conclude that material C  is a mineral. Material D is made of different elements and is characterized by its porosity  texture what lead us to classify it as a rock.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.