Use the periodic table to select the chemical symbol for each element
the symbol for carbon is
the symbol for hydrogen is
the symbol for nitrogen is
the symbol for iron is
the symbol for copper is
done

What does the process of natural selection involve

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.

How do you lengthen a pattern piece? (family and consumer science, sewing)