1阅读理解 There are about 30 species of seals.They all can be classified into two types:eared seals and true seals.Eared seals have ears that can be seen,and their flippers(鳍状肢)work well on land.True seals have tiny ears,and their flippers work better in the water. Seals spend much...
阅读理解 There are about 30 species of seals.They all can be classified into two types:eared seals and true seals.Eared seals have ears that can be seen,and their flipperswork well on land.True seals have tiny ears,and their flippers work better in t
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Heaviest sub-species:Southern Elephant Seal Elephant Seals come ninth among the world’s heaviest animals. Male adult elephant seals weigh around 1.5 tonnes on average, but its heaviest subspecies, the Southern Elephant Seals, can have a mass of around four tonnes. This makes elephant seals the ...
Polar bears need sea ice to be able to hunt, raise their young and as places to rest after long periods of swimming. Certain seal species, like ringed seals (环斑海豹), make 【小题3】 (cave) in the snow and ice to raise their pups, feed and mate.It's not just polar animals ...
- 《Journal of Experimental Biology》 被引量: 141发表: 1997年 Trends in western Ross Sea emperor penguin chick abundances and their relationships to climate The emperor penguin (Aptenodytes forsteri) is extremely dependent on the extent and stability of sea ice, which may make the species ...
E Bruford,R Seal,M Wright 摘要: Abstract Among vertebrate species, the human and mouse genome assemblies are the most complete and extensively annotated. The HUGO Gene Nomenclature Committee (HGNC) and the Mouse Genomic Nomenclature Committee (MGNC), in collaboration with the research community, ...
The availability of certain species of fish is based on the time of day and what month of the year it is. If you’ve already caught the fish, you can look it up on your bestiary to see what time of day and month they are most active. ...
asadly the same arbitrary fate affected other species 同一种任意命运哀伤地影响了其他种类[translate] aLong long ago,they love,and then they left.We all hope eachother happy everyday... 长期从前,他们爱,然后他们左。我们所有希望eachother愉快每天…[translate]...