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Chemically marble is known as Calcareous rock as it is composed of carbonate minerals like calcite or dolomite.

An Hourglass has two bodies joined together on standing still it ran from one to the other.

.mp3 is audio file extension.

"The moon smiled at me" is the example of personification in the given options.

Personification is a technique in which we give objects human traits like emotions, gestures, speech,... by using metaphor. 

Here moon is an object which cannot smile but using metaphor sense, we gave that sense to it.

• Project-based Organizations are those whose operations consist primarily of projects.


• Non Project-based organizations often may lack management systems designed to support project needs efficiently and effectively.