The body of an organism is a closed environment. It can be seen as an ecosystem of lots of different cells that live with in this environment. Cancer is just a mutation that allows some cells to replicate and spread through their environment in uncontrolled fashion.
I don’t know what cancer has to do with a closed environment. More like a failed "ecosystem in a jar*.
The body of an organism is a closed environment. It can be seen as an ecosystem of lots of different cells that live with in this environment. Cancer is just a mutation that allows some cells to replicate and spread through their environment in uncontrolled fashion.