解析 [答案] B [答案] B [分析]文章第三段中的二三句是说 grizzly bears 跟其余熊的不同之处,有 long rounded claws, many muscles on their backs, small rounded ears and white- tipped (or “ grizzled,所”以) furB 正确。反馈 收藏
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“Grizzly bears are re-occupying large areas of their former range,” says bear biologist Chris Servheen. As grizzly bears expand their range into places where they haven’t been seen in a century or more, they’re increasingly being sighted by humans. ...
In North America, grizzlies have a much more limited range than black bears do. In the Lower 48, they are in Washington, Montana, Idaho and Wyoming. Andthen in Alaska, too. They also coverlarge parts of western Canada. Black bears have more territory. They can be found in as many...
Teddy Bears, Stuffed Bears & History How was the teddy bear invented? “A bedroom without a Teddy is like a face without a smile.”– Gil Davies When the teddy bear was first created by Margarete Steiff in 1902, the initial design was based upon the grizzly bear. And also based on the...
Bear hibernation is part of a bear's annual cycle of activity, when its metabolic systems change and activity pauses for a period of time varying with the habitat's climate. Grizzly bears hibernate for 5–7 months each year. But it isn't as clear-cut as curling up and going to sleep ...
In the fall season, grizzly bears will vary their movements to find as many sources of food as possible. They are storing fat for the non-eating months. As winter nears, they move closer to areas appropriate for establishing dens.
How climate change threatens grizzly bearsIn the American West, a chain reaction affects the fate of an iconic species.Mother Jones
Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www.springernature.com/us). Scientific American maintains a strict policy of editorial independence in reporting developments in...
Lions, and tigers, and bears – Oh my! We’ve all heard the familiar refrain, but what do bears have to do with your garden? Black bear populations are gaining numbers in many states and bear-human conflicts are on the rise. As a result, many gardeners need to start considering how ...