If a cell would grow uncontrolled, at some point its organelles wouldn’t be able to fulfill its needs for survival. The larger a cell becomes, there are more requirements on its DNA molecule. The need for nutrients increases as well as the production of waste products, which causes problems in transporting these substances across the cell membrane. Therefore, at some point, the cell must divide.

In asexual reproduction, there is only one parent and the offspring is their clone, which may not be able to survive a change in the environment. This process occurs faster than sexual reproduction, which enables the rapid growth of population. In sexual reproduction, two parents pass their genetic material to the offspring. This method is more complex, but it creates offspring that is genetically distinct. That is the main advantage of sexual, over asexual reproduction, which might help the population to persist through the environmental changes.

The larger a cell becomes, there are more requirements on its DNA molecule. The need for nutrients increases as well as the production of waste products, which causes problems in transporting these substances across the cell membrane.
For example, if there are too many users of a certain wireless network, internet speed and information transport will slow down in both directions. However, if we enable two wireless networks instead of just one, while the number of users remains the same, the information transport speed will significantly increase.
The same happens when a large cell divide.

In asexual reproduction, there is only one parent and the offspring is their clone, which may not be able to survive a change in the environment. This process occurs faster than sexual reproduction, which enables the rapid growth of population.
The Aphids reproduce sexually in the fall in order to increase the chances for the survival of their offspring when climate change occurs in the fall and winter.