structural:reformatting, quality:correction, information:extraction
Bees population decline

Over the last half century, there has been a general decline in the species richness of wild bees and other pollinators, probably attributable to stress from increased parasites and disease, the use of pesticides, and a general decrease in the number of wild flowers. Climate change probably exacerbates the problem. This is a major cause of concern, as it can cause biodiversity loss and ecosystem degradation as well as increase climate change.