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Insects

一份有关昆虫数量的科学审核报告显示，世界上 40% 的昆虫物种数量正 “急剧下降”。这份报告称，导致昆虫总数下降的原因是集约型农业、使用杀虫剂以及气候变暖。

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Insects are the most ________________form of animal life on the _________, representing more than ____________________the _____________of the   entire human population. 

This study looked at 73 scientific reports. It found that _______________, insect populations are falling by about ________ a year. _________ of   the world's insects could be ___________within a few _______________. 

In some areas, the __________________is even more ___________________.  According to one recent study, the number of _________________ ____________ in Puerto Rico has fallen by 98% over the last 35 years.______________________research shows that insects are declining about __________as fast as _____________________. 

The report's authors say a _____________of current agricultural _____________is needed, in particular, a serious ____________________in pesticideusage.