How does oxygen become an ion with a -2 charge? A. they gain two electrons
B. they lose two electrons
C. they share two electrons

Iwll give extra points to who gets this for ! what type of reaction is this? ?

Esign techniques and materials that reduce the negative environmental impact of a structure are referred to as

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.