Climate in Crisis: Warming Causes Animal Extinction nbcbayarea.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from nbcbayarea.com Daily Mail and Mail on Sunday newspapers.
New UArizona research finds that sexual reproduction and multicellularity drive diversity among different species. By Mikayla Mace Kelley, University Communications Wednesday
There are huge differences in species numbers among the major branches of the tree of life. Some groups of organisms have many species, while others have few. For example, animals, plants and fungi each have over 100,000 known species, but most others – such as many algal and bacterial groups – have 10,000 or less.
A new study, published in the Proceedings of the Royal Society B, tested whether sexual reproduction and multicellularity might help explain this mysterious pattern. We wanted to understand the diversity of life, said paper co-author
Sexual Reproduction and Multicellularity helped drive diversity of Species, finds Study; Explains Paradox of Sex ibtimes.co.in - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from ibtimes.co.in Daily Mail and Mail on Sunday newspapers.
Jo-Anne McArthur/We Animals/naturepl
THE Great Barrier Reef is already in a critical state. Rising sea temperatures are killing corals faster than they can recover. As temperatures continue to increase, more and more of the reef will die, along with the rich variety of life and the AUS$6 billion tourism industry that depend on it.
It is one headline-grabbing example among many. The continued rapid warming of the planet would wipe out many species, even if it were the only change happening. As it is, a sixth mass extinction in Earth’s history is already under way as farms replace forests and factory ships overfish the oceans.
Winnipeg Free Press
The K-12 commission heard no shortage of concerns about a “no fail” practice in Manitoba public schools during the education review, but superintendents insist holding struggling students back is rarely in their best interest.
The K-12 commission heard no shortage of concerns about a no fail practice in Manitoba public schools during the education review, but superintendents insist holding struggling students back is rarely in their best interest.
Last month, the province released the commission’s final report, which addresses subjects ranging from school governance to grade retention. Parents and others expressed concerns during our consultations that ‘no fail,’ ‘no zero,’ and ‘grade inflation’ practices are prevalent in the province. They were also troubled that students were promoted through the system without achieving grade-related expectations, states a section on flunking.