No. They affect things like flowers but nothing really important like the earth's temperature or the Hot 100.
Quote:
Bees
Size: Around half an inch
Number of different species: 20,000 known species of bee
Strength in numbers: Billions of individuals – a single honey bee hive can contain 40,000 bees
Threats: Disease and climate change have seen populations plummet by up to 80%
Without bees, humans would starve.
These industrious little insects are the world's greatest pollinators, carrying a dusting of pollen from flower to flower as they gather nectar for their hives.
Millions of years of evolution has seen many plants become almost entirely reliant upon bees to help them breed.
Crops such as almonds, peaches, avocados and apricots are totally reliant upon bee pollination.
If you are talking about the honeybee it would be really bad but not the end of us, there were no honeybees in North American a few hundred years ago plants relied on native pollinators. Honeybees now pollinate 70 of the 100 crop species that feed 90% of the world.
If all bees were to die it would be a global disaster, the cascade of events would lead to mass extinction of plants and animals.