Young people can't remember how much more wildlife there used to be
newscientist.com
newscientist.com
>Not to worry, they were assured. It was merely the Milky Way, the vast galaxy that humans once knew so well — until the glare from electric light effectively erased most traces of it from urban and near-urban skies.
"Paradise Lost"?
Edit: Found it: https://www.amazon.com/Paradise-Found-Nature-America-Discove...
I think pointing to modern agriculture is a pretty safe bet. You shouldn't just make farmers responsible. They have little choice because pressure from consumers comes directly back to them through retail and processors. Large scale producers have little choice. Those want to minimize the amount of suppliers anyway.
Obesity and screen related issues like depression and anxiety run rampant. Do your kids a favor: take away their smartphones.