There already is climate change. Acidic oceans making shell formation difficult to impossible for baby clams in the NW coastal areas, species migration to higher elevations, entire forests decimated by insects that don't die due to global warming.
Acidic oceans has been a problem in the pacific northwest of the US long before someone thought to blame climate change for it. Species have been migrating to higher elevations for ten thousand years. And there wouldn't be that decimation of forests without those invasive species - which is not a climate change-related issue.
This is a typical case of confirmation bias. Find a bunch of bad things happening (some which have happened probably for millions of years as in the case of the local ocean acidification) and blame it on a nebulous "climate change".
But keep denying it, if you want.