All the answers to these please

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?