A big bee problem
本文作者： 21st
HONEYBEE colonies (蜂群) across the US have been dying off at a high rate in recent years. Scientists have been working on the problem, but have not found a good way to solve it. Now, researchers at San Francisco State University have found a new possible cause of the problem – a parasitic fly (寄生飞虫). |  |
| |||||||||||||||||||||||||||||||
京公网安备 11010502033664号