Yes, by untouched I mean people aren't living there. So you can't blame build out and direct pollution. But yes those places haven't escaped pollution like CO2

Yes, by untouched I mean people aren't living there. So you can't blame build out and direct pollution. But yes those places haven't escaped pollution like CO2 and microplastics. Extreme heat is now happening for longer periods. That kill the bugs. My bet is global warming is the primary culprit.