Forces that are equal in strength and opposite in direction are

Who is better, messi or cristiano, i need this for a chemistry class. asap

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

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.