Leads to deforestation, pollutes water from waste dumping, air pollution as well, less biodiversity
This is because daughter cells are identical to the original cell.
Although during the process of mitosis the number of chromosomes changes, the final number of chromosomes in each daughter cell is always the same number as were in the original cell.
Scientific validity is the applicability of a conclusion drawn in the context of a scientific experiment to the world at large.
D oxygen there was no free oxygen on the earth
