Answer: asexual reproduction
Explanation:
From the question, we are informed that Brady took a cutting from a sweet potato vine in his family garden and placed the vine in a small vase filled with water. We are further told that after about a week, tiny roots had begun to grow. This is simply an example of asexual reproduction.
Asexual reproduction is simply refers to a form of reproduction which doesn't have to do with changing the chromosomes or gametes fution. In this case, the fact that tiny roots began to grow despite the fact that there was no fusion of gamete shows that it's an asexual reproduction.
Because decomposition helps create nitrogen, a lack of decomposition would result in a lack of nitrogen being created.
Random, changes in a organism dna, delete and add.