阅读下列短文,从每题所给的 A、B、C和D四个选项中,选出最佳选项。North America's birds are disappearing from the ski
They cover six per cent of the Earth's surface. The biggest rainforests are in South America, Afric a and South East Asia. There aren't any rainforests in Europe or North America.More than 4,000 types of birds and more than 1,000,000 types of insects (昆虫) live in the rainforests....
MORE: Two-thirds of birds in North America at risk of extinction due to climate change: Report Some species have recovered significantly after conservation efforts Scientists and bird enthusiasts are witnessing the fruits of their conservation labor, as populations of some bird species continue t...
根据第二段中“Among birds on the IUCN Red List of Threatened Species, almost 400 birds worldwide have had their conservation status changed for the worse in the past three decades (moving from vulnerable to threatened, or threatened to endangered) — five times more than the number of bird ...
From her home in Baker, Nevada, Elizabeth Woosley can see Andromeda, the nearest galaxy to the Milky Way, with her naked eye. But she's one of the lucky ones as America's dark skies are rapidly disappearing.Woosley, the owner of the Stargazer Inn in Baker & Great Basin National Park,...
Rainforests are often called the lungs(肺)of the planet for their role in reducing carbon dioxide (CO2) and producing oxygen (O2). Rainforests also influence the earth in many different ways, but as time goes, they are disappearing. Here's some basic information about rainforests. Where are ...
There are rainforests in many parts of the world, such as Africa and Southeast Asia. But the biggest rainforest is in South America. There aren’t any rainforests in Europe or North America. About 75 percent of animals live in rainforests. There are many beautiful birds, insects and so on...
“Why did the snowy owls start disappearing from Barrow?” he says. “It’s too quiet out here. Eerily quiet.” This year, the breeding site—the only place in the United States where snowy owls regularly breed—now resembles more of a bachelor pad. There are more single male owls ...
Billions of birds have been lost in recent decades in North America and Europe alone while there are more species in the tropics(热带)。 Conservation efforts have been successful in rescuing individual species in specific locations, but political will and funding are needed to reverse the global ...
They’re “gross and slimy and flaccid and wiggling.” But parasites can be just as important as more charismatic animals—and many may be on the verge of disappearing.