安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- sixth extinction part module 1 Flashcards - Quizlet
Study with Quizlet and memorize flashcards containing terms like In comparison to past statistics, the consensus among the scientific community is that extinction rates are currently high Which of the following is the most plausible explanation for causing this recent extinction crisis?, Earth forms and life begins; 4 6 BYA—630 MYA, Large and relatively sudden increase in the diversity of
- The macroevolutionary impact of recent and imminent mammal . . .
A return from current to pre-human diversity would take 1 6 million years (Myr) for bats, and 2 9 Myr for non-volant mammals For non-volant mammals the ERT if threatened species go extinct
- Global impacts of future urban expansion on terrestrial . . .
The world’s population is projected to reach 8 5–9 9 billion by 2050 1, with 55–78% living in urban areas 2 This global explosion of urban population will undoubtedly cause an increasing
- How many species are there on Earth? Progress and problems - PLOS
They found 1 1 million putative species, after excluding a remarkable 9 5 million potential species each represented by a single sequence These putative species were mostly Ascomycota (57%; yeasts and relatives) and Basidiomycota (37%; mushrooms and relatives) They extrapolated from this sampling to conservatively project 6 3 million fungal
- Insights from a century of data reveal global trends in ex . . .
To evaluate the management of ex situ plant diversity, we analysed a century of data comprising 2 2 million records, from a meta-collection currently holding ~500,000 accessions and 41% of global
- A large-scale phylogeny of Amphibia including over 2800 . . .
The largest estimate of extant amphibian phylogeny to date is that of Frost et al (2006) Those authors reconstructed amphibian phylogeny based on relatively intensive sampling of species (522) and characters (up to 4 9 kb of sequence data from 2 mitochondrial and 5 nuclear genes [mean = 3 5 kb], and 152 morphological characters)
- Dire wolves were the last of an ancient New World canid lineage
Dire wolves split from living canids around 5 7 nbsp;million years ago and originated in the New World isolated from the ancestors of grey wolves and coyotes, which evolved in Eurasia and
|
|
|