The transcription terminator stops dna polymerase, and results in the polymerase falling off the dna template. adds a terminator nucleotide to the rna, and results in a hairpin loop structure in rna. stops dna polymerase, and adds a terminator nucleotide to the rna. results in a hairpin loop structure in rna, and stops dna polymerase. results in a hairpin loop structure in rna, and results in the polymerase falling off the dna template.

Results in a hairpin loop structure in RNA, AND results in the polymerase falling off the DNA template.

Explanation:

As the RNA polymerase arrives at the terminator site, it pauses. The termination of RNA transcription occurs when an RNA transcript with a self-complementary sequence is formed leading to the formation of the hairpin structure. The hairpin structure has 15-20 nucleotides.  

The hairpin structure of RNA weakens A=U base pairs in RNA-DNA hybrid and/or weakens the interaction between RNA and RNA polymerase. The overall effect is the dissociation of RNA polymerase from the complex and termination of the transcription.

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.