Answer:
It is most likely C
Explanation:
People get sick and maybe the twin/sibling has a medical condition that may interrupt the experiment.
Asexual reproduction = Binary Fission = Mitosis
The cell at the end of asexual reproduction compare to the original cell: at the end is called daughter cell, at beginning is parent cell; both have same number of chromosomes (2n = diploid).
I believe it’s A in the question
Answer:
all of the above can lead to increase in nitrogen