What can people do to preserve earth's water supply?

Calculate the number of molecules present in 0.750 mol of mgo.

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.

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols