Gases are unique because it is the only phase that

can be compressed

can flow

is composed of moving particles

cannot be compressed

The correct answer to the question above is that it can be compressed. Gasses are indeed unique because it is the only phase that can actually compress, however, this may vary to the amount of the change of volume. 

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.