One of the pieces of twisted logic your denialist/skeptic type will toss out is that “Climate has always changed”... so forget about.
While that statement is true enough it totally side tracks the conversation into a dead end alley - since today’s concerns are about today’s situation which is quite unique to anything Earth has experienced in the past. Unfortunately folks who most use that meme are also folks who are least interested in learning about the difference between those ancient situations and today’s.
In this article Dr. Green does a nice job of putting that argument into realistic perspective
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We’ve Been Through Climate Changes Before: But Mostly Cold Ones And Mostly In Our Far Distant Past
Dr. Sarah Green - Chair for the Department of Chemistry at Michigan Technological University.