Assessment
7. during which of the following processes will the chemical composition of a subs
chemical composition of a substance change?
o a. evaporation
ob. sublimation
o c. condensation
od. decomposition
this proce

Decomposition changes the substance of a composition.

Explanation:

Through decomposition process the chemical substance of a composition undergoes change by breaking into organic elements. It falls under the process of cycle of nutrients and it actually recycles matter that captures space in biosphere.  

Generally, living being starts decomposing after their death.  This process is initiated by certain bacterial interference. These bacteria are referred to as decomposers. The general steps of decomposition includes-  fresh, active decay, bloat, advanced decay and remains.

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ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'