Question

Why is too much ultraviolet radiation harmful to plants and animals?

Answer 1

UV radiation is very high energy what's called ionizing . this meant that if it passes through molecules it strips the electrons off and thereby break the bond of any organic molecules in animals and plants

Answer 2

UV radiation is very high energy and is also what's called "ionizing". This means that as it passes through molecules it strips electrons off and thereby breaks the bonds of any organic molecules in the animal. For example, if UV rips through the DNA of cells it can cause real chromosomal damage.