What sustains life is the goldilocks zone, spin of the earth, our sun, etc basically all things out of our control.
And content of the atmosphere, which is something that we can affect from our actions.
The ozone layer? We now know that it can self repair itself.
It can! Just like we have scars that can heal. However, if the ozone layer is destroyed faster than it can repair itself, then we have a problem.
Our impact on our atmosphere with normal human activities is tiny in the grand scheme of things regarding earth's processes.
If we want to compare to 100 million years ago, yes! However, the impact on our atmosphere compared to a much shorter time frame is pretty significant.
And content of the atmosphere, which is something that we can affect from our actions.
It can! Just like we have scars that can heal. However, if the ozone layer is destroyed faster than it can repair itself, then we have a problem.
If we want to compare to 100 million years ago, yes! However, the impact on our atmosphere compared to a much shorter time frame is pretty significant.