搜索结果: 1-7 共查到“理学 family tree”相关记录7条 . 查询时间(0.062 秒)
Sloths, which once roamed the Americas, ranged from tiny, cat-sized animals that lived in trees to massive ground sloths that may have weighed up to six tons. The only species we know today are two-to...
Crabs, lobsters and shrimp now have a family tree dating 500 million years（图）
Crabs lobsters shrimp family tree dating 500 million years
2019/10/30
Researchers have for the first time traced the roots of crabs, lobsters and shrimp to create the family tree of crustaceans people love to eat.The tree shows the 450-million-year evolution of these 10...
Shaking up the fish family tree:'Living fossil' not as old as we thought（图）
shaking up the fish family tree living fossil as old as we thought
2017/9/19
Polypterids are weird and puzzling African fish that have perplexed biologists since they were discovered during Napoleon's expedition to Egypt in the late 1700s.Often called living fossils, these eel...
Since the mid-1990s, when the first planet around another sun-like star was discovered, astronomers have been amassing what is now a large collection of exoplanets—nearly 3,500 have been confirmed so ...
How Close a Bataknese One Another?: Study of Indonesian Batak’s Family Tree
family tree batak customary law scale-free network
2015/7/28
The paper conjectures some alternative acquisitions of mathematical models to see the Batak family tree that could enrich our understanding of the anthropological study of Bataknese people. We discuss...
Scientists reveal new family tree for birds, clear back to dinosaur parents
Scientists new family tree for birds clear back dinosaur parents
2014/12/30
A large international group of scientists, including an Oregon Health & Science University neuroscientist, is publishing this week the results of a first-ever look at the genome of dozens of common bi...
Computer Scientists at UT Austin Crack Code for Redrawing Bird Family Tree（图）
Computer Scientists UT Austin Crack Code Redrawing Bird Family Tree
2014/12/30
AUSTIN, Texas — A new computational technique developed at The University of Texas at Austin has enabled an international consortium to produce an avian tree of life that points to the origins of...