根据第一段第二句中的 the decline of Arctic sea ice is the greatest threat to the polar bears可知,北极冰层的减 少是北极熊受到的最大威胁。 13.B细节理解题。 根据第二段最后一句可知,在 不远的未来,由于北极熊很容易受到栖息地 丧失的影响,它们可能遇到灭绝的危险。 14.A细节理解题。 根据第四段第...
And polar bears are smaller, compared with historical records.This is not the first time this has happened in Earth's history. 55 million years ago, a warming event similar to the current climate change caused bees, spiders and ants to shrink by 50 to 75 percent over several thousand years...
5:17 Is it completely accurate to say that on the summer solstice, the Earth’s axis of rotation is tilted “directly towards the Sun”? Strictly speaking, “in the direction towards the Sun” is more accurate than “directly towards the Sun”; it tilts at about 23.5 degrees towards the...
What is brand monitoring? Brand monitoring tracks what's being said about your brand online. The goal is to turn social posts that talk about your brand, reviews, news mentions, and customer conversations into data you can analyze and use. Here’s how it works in practice. Let's say your...
4. I read a lot of moving stories about dogs and how friendly they are to people. 介绍动物的现状: 1. However, the number of polar bears is getting smaller. 2. In fact, they are in great danger. 3. Some animals are losing their homes because of human activities. 4. They have ...
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What is special about the Witchwood forest biome? What is the biodiversity of a forest biome? How many animals live in a grassland biome? What is the tropical rainforest biome? What biome does a kangaroo live in? What biome do tigers live in?
The polar bear can swim very well. It catches fish and sea animals for food. It goes into the sea when it is afraid. People kill the polar bear for its beautiful white coat. The governments of Canada and United States call on that people should stop killing polar bears. They don’t ...
Although water plays a vital role in the celebration,there is much more to the festival, especially during the first two days water splashing is com-paratively kept under control.9. Nature has prepared polar bears for the cold condi-tions but nothing has prepared them for the danger threatens...
They investigated the reliability of a trained dog for pregnancy detection in polar bears Ursus maritimus. The dog had a reduced sensitivity in testing versus training and the authors discussed the possible causes. Moreover, the authors suggest that it is likely that many unique cases of condition...