The natural cause of acid rain is the <span>chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air.</span>
Answer:
It will be (cementation).
That's the correct answer.
I am pretty sure that a point mutation that creates a premature stop codon is called a synonymous mutation. It also can be called silent mutation, if you have it in you option list, feel free to use it, it is the same. That will definitely help you.