Answer: Experts who study a country's development measure the economic health, social, and living conditions in order to determine the indicators that show the level of development in a country.
Explanation: These "experts" are more known as economic scientists (or another closely related word), where they take the role of documenting and managing the status of the economy (as their name states).
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A mineral has 5 characteristics:-
Naturally occurring, Solid, Inorganic, Crystalline structure, and the same chemical composition.
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Light colored igneous rock is called felsic, it is high in quartz, muscovite mica, and orthoclase feldspar content. Dark colored igneous rock is called mafic, and contains a lesser amount of silica along with olivine, pyroxene, amphibole, biotite mica, and plagioclase feldspa
<span>Light coloured igneous rocks (felsic) tend to have greater silica and aluminum content and a lower iron and magnesium content than dark (mafic) rocks.</span>
