A nucleic acid that is similar to DNA RNA messenger RNA ribosomal RNA transfer RNA inTron RNA polymerase

the answer to your question is tooth decay.

i wish i could with all of them i can barley see the first one so here's the answer to the first one b

1) a

2)c

3)a

4)c

5)b

hope this , if so, your appreciation would be signified through giving   me brainliest, and a you : ) have any further questions? feel   free to ask me in the questions box.