Bees help pollinate around 70% of all the crops on the planet. If all the bees die & nothing rises to replace them (another type of insect, for example, or serious human intervention), many plants will simply die-off due to lack of pollination. If 70% of the plants on the plan disappear, then this would lead to the disappearance of certain animal species. . . including mankind.
Girl Scout's from the Redmond, WA troop delivering over 30 cards to Lowe's on behalf of their fellow Brownies and Daisies asking the store to give bees treats, not tricks and stop selling bee-killing pesticides.