This newspaper comprehensively reports from foreign mediaAccording to recent reports from the official website of North Carolina State University in the United States，Jennifer M, professor of biological sciences at the school. Landin) and others，College students’ knowledge base on bet with bet365 will determine future habitats、Ecosystem、Aspects of species diversity and agricultural development。Although the scientific community is increasingly aware of the impact of bet with bet365 on ecosystems and geographical landscapes，Most college textbooks published in the United States after 2010 have cut bet with bet365 content。

Landing and others selected 57 college biology textbooks published in the United States from 1970 to 2019 as research objects，Examined the coverage of bet with bet365 knowledge from four aspects，The number of sentences in bet with bet365 topic paragraphs respectively；Theme classification of sentences (greenhouse effect、The impact of global warming、Actions to improve bet with bet365, etc.)；Starting position of bet with bet365 paragraph in book；Charts and data references。

Discovered by Landing and others，In the 1990s，Highest increase in coverage of bet with bet365 in U.S. college textbooks。The average textbook published before 1990 contains less than 10 sentences about bet with bet365。In the 1990s，Median of 30 sentences about bet with bet365，Sentences that also describe bet with bet365 solutions peaked，More than 15% of bet with bet365 articles。The first decade of the 21st century saw growth in bet with bet365 research。Higher education also reflects the latest academic results；Median climate content in textbooks increases to 52 sentences。However，The median content of bet with bet365 content in textbooks dropped to 45 sentences after 2010，The solutions to climate problems only account for about 3% of the total space on bet with bet365。In addition，The textbook only shows chart data on global temperature and carbon dioxide levels before 2000，And photographic evidence of species distribution changes after 2000。

In addition to shortening the content and citing outdated data，bet with bet365 chapters continue to recede in U.S. college textbooks。1970s，The bet with bet365 chapter makes up the last 15% of the book；After 2010，This topic only occupies the last 2 pages of the book.5%。Landin worries that teachers who are accustomed to teaching materials in order will ignore the bet with bet365 chapter at the end of the textbook。

Researchers also found，As time goes by，Textbook chapter shifts from describing the principles of the greenhouse effect to focusing on the effects of bet with bet365，At the same time, the space discussed on how to solve the climate problem has been greatly reduced。Landin said，This content arrangement conveys to students the pessimism that humans cannot solve the climate problem。This is not only extremely misleading，Also contributes to young people’s fatalistic views on bet with bet365。

Landing and others hope the study will serve as a wake-up call for publishers and teachers in the United States。Landin said: “If we want the next generation to truly understand how bet with bet365 affects every aspect of life on Earth，And many ways for all mankind to cooperate to solve the problem of bet with bet365，We need to more comprehensively integrate bet with bet365 into teaching。”

　　(Liu Yuwei/Compiler)