what is Argon and where it is used ?
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Morphological evidence for evolution arises from many aspects of biology that includes fossils, homologous structures, and molecular similarities between the DNA of different species. Fossil records: A fossil itself exposes the organism's structure and the relationships between present and extinct species.
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Argon is used in some types of arc welding such as gas metal arc welding and gas tungsten arc welding, as well as in the processing of titanium and other reactive elements. An argon atmosphere is also used for growing crystals of silicon and germanium.
Appearance: colorless gas exhibiting a lilac/violet glow when placed in an electric fi...
Phase at STP: gas
Speed of sound: 323 m/s (gas, at 27 °C)
Group: group 18 (noble gases)
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