Fish are cold-blooded animals, meaning they rely on external sources to regulate their body temperature. When the water gets too cold, they seek out warmer waters to stay alive and comfortable. The question asks why fish swim to warm rivers. Of the above options, only being cold makes ...
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押成都B卷 完成图表 本题测试的主要目的是综合考查学生的篇章结构、主题归纳、整体理解、细节分析与推断的能力,同时还考查学生形成思维导图、解读表格形式以及准确转换信息和正确表达输出等能力。试题设置主要是帮助学生理清文章脉络,训练学生观察、分析、归纳的能力以及对篇章、句子、词汇的理解与思维转换能力。该题对学生...
Like people,animals need to rest after working hard. Some animals sleep in water. Others dig holes under the ground. Some even sleep high in trees or under leaves. But they all find a way to rest. Some animals in the sea sleep in strange ways. Fish sleep with their eyes open. They ...
Freshwater fish don't actively drink water by their mouth, because if they do, they run a high risk of having their blood diluted. However, seawater fish actively drink a lot of water to keep themselves hydrated at all times.
The polar bear lives in the snow and ice.At the North Pole there is only snow,ice and water.There is not any land.You cannot see the polar bear in the snow because its coat is yellow-white.It has a very warm coat because t...
If you’ve ever beenice fishingor even got caught out in the rain, you know that water gets pretty darn chilly in winter. You can’t help but wonder how anything can live in such extreme conditions as frozen lakes and icy oceans. Do fish get cold? How do they survive the winter? Th...
No other butterfly in the world migrates like the orange and black monarch of North America. They can not live for long periods in cold weather. So each autumn around October, the butterflies travel up to 3,000 kilometers south to spend winter. Some even fly to the mountains of Mexico....