The answer would be sewer systems.
It blocks harmful x rays and is used to send radiowaves
The first stage is the light dependent stage and the second stage is the light independent stage.
if you need a more in depth explanation, i can give one :)
DNA is a dynamic and adaptable molecule. As such, the nucleotide sequences found within it are subject to change as the result of a phenomenon called mutation. Depending on how a particular mutation modifies an organism's genetic makeup, it can prove harmless, helpful, or even hurtful
