Manmade Global Warming - New Extremes, page-10468

No its not due to pesticides.

Rising temperatures are causing heat stress on bees that are already weakened due to the varroa parasites.

Plants are being stressed due to higher temperatures meaning they need more water to keep cool and so produce smaller crops.

Its the way of ignorant and uninformed people like you who have no idea yet have to say something to sound self-important.

You clearly have NFI about horticulture.