Minerals do NOT A. have unique crystal structures.
B. have definite chemical compositions.
C. form as the result of natural processes.
D. form as the result of compaction and cementation.

D. form as the result of compaction and cementation.

Explanation:

A. B. and C. are correct therefore leaving D as your answer.

All minerals are unique, all minerals form naturally, and have chemical compositions.

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in situ hybridization has been widely used for research applications, including clinical cytogenetics, gene mapping, tumor biology and studies of chromosome evolution.

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.