Trash cans, dumps, anything to do with getting rid of unneeded waste
Answer:
Control of the cell cycle is necessary for different reasons. When the cell cycle are not regulated, cells could constantly undergo cell division without any form of control which will lead to cancer.
Internal regulation of the cell cycle is necessary to alert the passage of one phase to the next at a set given time. This helps in the overall metabolism of the body.
Artificial selection, also selective breeding occurs when humans breed individuals that have specific characteristics that they want to manipulate.
A heart beat, breathing, and moving ;)
