单词:native plants
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THE BISON ON THE PLAINS OF AMERICA The first settlers on the plains of America were Native Americans. They arrived more than. 30,000 years ago by crossing a land bridge from Asia to America. The Native Americans lived by gathering roots, nuts and wil
美国干旱西部将迎来多雨冬季 As the drought continues for another year in southern California, more and more people, including Jan Muntz, are replacing all or parts of their yards with unconventional garden plants. 随着干旱在加利福尼
Scientists Fear Non-Pest Insects are Declinin Butterflies are as beautiful as the flowers they feed on.But they appear to be less abundant than in years past and that has scientists worried.Because butterflies, bees and other beneficial bugs pollinat
Researchers Find Bright Side to Some Invasive Species Non-native species present threats to natural environments across the world by pushing out native organisms. Their presence can seriously damage ecosystems that provide clean water, food and other
Climate-Controlled Time Machine Tests Prairie Future Researchers from the University of Oregon have set up a kind of time machine to test how a warmer climate might affect grasslands and prairies around the world. Today, grasslands cover between 25 a
Researcher Explores Native American Herbal Remedies Hikers often explore the foothills of the Angeles National Forest, but this group of hikers has a purpose. They are learning how Native Americans used the local vegetation in their healing, includin
Globe Trotting Tropicals Plants were world travelers, long before tourists like you and me, were able to fly off to vacation around the world. When Columbus sailed west, he was seeking precious spices of the Indies. He missed his original destination
THE BISON ON THE PLAINS OF AMERICA The first settlers on the plains of America were Native Americans. They arrived more than 30,000 years ago by crossing a land bridge from Asia to America. The Native Americans lived by gathering roots, nuts and wil
说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 facet [ 5fAsit ] The skill with which
More coming up on Day to Day from NPR News. From NPR News, it's Day to Day. Americans are loath to vote for higher taxes, except when it comes to smoking. On election days, states like Arizona and South Dakota voted for increased taxes on the sales o
THE BISON ON THE PLAINS OF AMERICA The first settlers on the plains of America were Native Americans. They arrived more than. 30,000 years ago by crossing a land bridge from Asia to America. The Native Americans lived by gathering roots, nuts and wil
This is the VOA Special English Development Report. Green roofs are designed to save energy and capture rainwater. Rooftops covered with plants help keep buildings cool. They can extend the life of a roof. And they can reduce water runoff into stree
Scientists Predict Wet Winter for Dry American West 科学家预测湿润冬季或缓解美国西部干旱状况 Much of the western United States is suffering from extreme drought conditions. U.S. officials are blaming the lack of rainfall and snow
Where Have All the Bees Gone? 蜜蜂都哪去了? Bees play an important part in the growth of crops. About 4,000 wild bee species are native to North America. Other bee species on the continent were imported from Europe to produce honey. Bees also s
Photos Show Todays Native Americans Matika Wilbur has a goal that will take her across the United States. She plans to photograph every federally recognized Native American tribe in the country. She hopes that her photographs will help end the many s
NOEL KING, HOST: Climate change is causing more rain in many parts of the U.S., and more rain means more flooding. And that is bad news for one Great Lakes region crop - wild rice. NPR's Rebecca Hersher has the story. REBECCA HERSHER, BYLINE: Norther
AGRICULTURE REPORT - Experts Say 'Lost' Crops Can Fight Hunger in AfricaBy Jerilyn Watson Broadcast: Tuesday, December 05, 2006 This is the VOA Special English Agriculture Report. Scientists around th
A man who was born in the state of Yan grew up in the state of Chu.At his old age he decided to return to the state of Yan.On his way he passed the state of Jin.His fellow travellers played a trick on him.They pointed at a city of the state o
Plants were world travelers, long before tourists like you and me, were able to fly off to vacation around the world. When Columbus sailed west, he was seeking precious spices of the Indies. He missed his original destination, but because he and othe
Oceans Most Wanted 伴随着人们的经济活动和国际交往,一些物种由原生存地借助于人为作用或其他途径移居到另一个新的生存环境并在新的栖息地繁殖并建立稳定种群,这些物种被称为外来物种。