http://www.bbc.co.uk/learningenglish/english/features/news-report/ep-160517

 

A new study suggests the number of   w________ b_______ in the United States has declined in many farming areas because of a b_________ in biofuels.

The report says that over f________  y________ up to 2013, the abundance of  w_____ b______ fell across almost a quarter of the US as land was converted to grow c_______ for ethanol.

 

A new study suggests the number of wild bees in the United States has declined in many farming areas because of a boom in biofuels.

The report says that over five years up to 2013, the abundance of wild bees fell across almost a quarter of the US as land was converted to grow corn for ethanol.

 

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