I was watching an English video when a native english speaker compared the PAST to the PRESENT. I usually use ''in the past/to the past'' to compare but the native chose ''it used to be'' instead, and then it popped into my head that it may be a good alternative to not sound repetitive. Can I use this interchangeably:
The Earth's climate has changed compared to the past.
The Earth's climate has changed from what it used to be.
Are they the same? I think it is but I'm not 100% sure, and I might be misterpreted if I use it incorrectly in my future conversation.