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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In North America there are three types of bears: black bears, grizzly bears (also known as brown bears in coastal regions of Alaska and Canada) [1] and polar bears. Polar bears are considered the most dangerous to humans, with grizzlies being next in line, followed by black bears. The b...
Brown bear attacks are most common in late spring, where mothers become fiercely protective of their young cubs. Food shortages and curiosity can also lead to brown bear attacks. If you meet a grizzly, stand your ground and do not run. These bears can run at around 35 mph over rough and...
What is the scientific name of polar bears? Are polar bears a keystone species? How did animals adapt to the ice age? Where is the polar bear on the food chain? Do bears live in boreal forests? Do grizzly bears live in boreal forests? How many polar bears are in Svalbard? What type...
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.
Builders of ecopassages try to make them look like a natural part of an area by planting trees on and around them. Animals seem to be catching on. Animals as different as salamanders (火蜥蜴) and grizzly bears are using the bridges and underpasses. ...
What is the animal sighting that tops many visitors’ wishlists in Yellowstone, Canada, or Alaska? You might think the answer is straightforward: grizzly bears. Wolves. Bison. The answer, however, ismoose! Standing taller (and heavier) than a horse, you quickly find yourself looking in awe ...
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...
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...