Water, oil, arable land, people due to declining birth rates, good quality air to name a few.

Irregular weather means irritate food. I'm a farmer and am already feeling that.

Raising sea levels means docks will be too low and important trade slows down. Countries that rely on food imports will feel the squeeze.

Well your tiny little feeble brain can't dwindle anymore than it already has, but that was never any type of real resource anyway.