Identify one way Ultra Violet Rays can be harmful to humans? Thank you so much!

What type of reaction is zn + cucl2 → cu + zncl2?

What reaction is taking place? 02 + c3h8 = h20 + co2

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.