*5.1.1 Carbon dioxide*

The modern time has become an era of the greenhouse gases and global warming. The ever-increasing concentration of various poisonous gasses in the atmosphere has affected a vast majority of the living beings in this world and honey bees are also not any exception with carbon di oxide being the most important of these gasses. Several scientists have worked on the toxicity of carbon dioxide on honey bees and have found some drastic effect of this gas on honey bee at both the levels including individual bees as well as at the colony level, which includes narcosis in foraging honey bees [11], earlier oviposition of queen [20], reduction in life expectancy [21] and reduction in pollen gathering by foraging bees [1].
