Ultraviolet radiation increases the likelihood of a cell becoming malignant primarily because uv radiation
a. breaks dna into fragments.
b. causes dna damage that leads to mutations.
c. makes rna polymerase more error-prone.
d. induces melanocytes to express more melanin.

B.

Explanation:

Causes mutations in DNA.

The signature mutation caused by ultraviolet light is a CC to TT mutation, caused when a CC dimer is mispaired with two adenine bases during replication. Because of these mutations, the connection between ultraviolet damage to DNA and cancer is quite clear.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.