Answer:
Each time a cell prepares to divide into 2 new cells, it must make a new copy of the DNA in its chromosomes. This process is not perfect, and errors can occur that may affect genes within the DNA. Cancers can be caused by DNA mutations (changes) that turn on oncogenes or turn off tumor suppressor genes.
Explanation:
I believe the answer is B.
B. I think thats right :/
Some possible scenarios include worldwide temperature change, worldwide disease breakout, environmental change, and lack of resources.
<span>A. transformation is the answer </span>
