In the process of genetic engineering, the mixing of genes may occur between

In the process of genetic engineering, the mixing of genes may occur between host genome and vector.

Explanation:

Genetic engineering is a process that applies biotechnology to the field of genetics, producing desirable alterations in the genome of an organism by introducing genes or fragments of genetic material from another organism.

The organism that is intended to produce the change or alteration is called the host organism, while the genetic information extracted from another organism to be introduced to the host is called the vector.

The production of genetically modified organisms by genetic engineering responds to manipulation where the genes of a host are mixed with those of a vector.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

i think that it is plants