By mating with desired traits is your answer
There are four phases to the cell cycle: G1, where the cell grows; S phase, where DNA is duplicated; G2, where the cell makes final preparations for cell division; and M phase, where the cell enters mitosis. Mitosis, or cell division, is only a small part of the cell cycle
Looking at the food chain & relationships between organisms can give you a good idea of theoretical cause and effects.
For example:
Starfish are the natural predators of the mussel. If the starfish, that eat the mussels, were to be taken out of the picture: there would most likely be a higher population of mussels.
How the return of local wildlife in Namibia had improved the quality of the lives of the humans in the said area is through the increase of Tourism, which brought jobs for the locals. Mostly, these jobs are related to boosting the tourism and by taking care and promoting their area. The answer would be the last statement.
