One way to look at climate change is to see it as a train with failed breaks. You can mitigate or reduce the impact of the train on its surroundings by reducing the speed of the train. However, the train is already in motion so it is nearly impossible to bring it to a halt. As for adaptation, you can design the surroundings of the railway tracks such that in the event of a train derailment and crash, the impacts will be lower.
Climate change is already in motion and it is irreversible. Therefore, we can only reduce the impact of climate change by achieving net zero emissions through techniques like afforestation, lower emissions and more. There is still a high probability of climate change related natural disasters like severe flooding or drought, and our resource use and spatial planning must adapt to these circumstances. I hope this answers your question!