What is the main difference between the items that contain carbon and those that do not?

the answer is b.) hydrogen bonds between bases.

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called

b) the inside picture would look at a very high temperature in a very low ph