ANSWER:
Minerals can form deep inside earth's crust by the crystallization of melted materials. There are two ways on how minerals are formed: crystallization of melted materials and the crystallization of materials dissolved in water.
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Answer:
The ignition delay in a diesel engine is defined as the time interval between the start of injection and the start of combustion. This delay period consists of (a) physical delay, wherein atomisation, vaporization and mixing of air fuel occur and (b) of chemical delay attributed to pre-combustion reactions. Physical and chemical delays occur simultaneously.
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