A common key part of many paleontologists' research focuses on better understanding the several mass extinction events that ended up wiping out most lives on this planet, including those in the Permian-Triassic
(1) mass ratio hypothesis (Grime, 1998); and, (2) niche complementarity hypothesis (Tilman et al., 1996). The first states that the traits (or functional identity) of the species dominating an ecosystem predominantly control ecosystem functioning. The second suggests that the degree to which ...
The search has now widened from an initial stretch of the South China Sea to a vast area of ocean measuring more than 2m sq nautical miles and land roughly equal to two-thirds of the land mass of the US.搜索范围已从最初的南中国海水域扩展至面积超过200万平方海里的广阔海域，以...
land uses. Up to 36 million acres, a land mass larger than Florida, has been idled by this broadest of recent federal programs. View chapter Reference work 2013,Encyclopedia of Energy, Natural Resource, and Environmental Economics Chapter
unique peat and the glorious Kinder Downfall. It's also one of the most significant areas in the National Park as the site of the 1932 Mass Trespass, when ramblers from nearby cities peacefully protested on what was then private land, contributing to the change in legislation allowing people ...
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slow-fast index. The last guild for which we found only partial support for the slow-fast axis was bats. High body mass is usually considered a ‘slow’ trait, and is expected to be positively correlated to lifespan and negatively to the number of offspring (trade-off between survival and...
a, Sites used in the models.b–d, Responses44of richness (b), total abundance (c) and community-weighted mean (CWM) organism size—plant height (crosses) and animal mass (triangles)—(d) to anthropogenic variables. Error bars show 95% confidence intervals. Primary, primary vegetation; YSV...
3. The apparatus of claim 1 wherein said video return signals are advanced through said register at a constant rate and said register taps are equally spaced. 4. The apparatus of claim 1 wherein said radar is a surveillance radar adapted to selectively blank a land mass of a predetermined ...
不清楚飞机是坠毁在陆地上还是海里。 14. They earn their living by squatting the land and sharecropping. 他们靠擅自占用土地,按种地的收益分成为生。 15. The new territory would extend over one-fifth of Canada's land mass. 这块新领土将会使加拿大陆地面积扩展1/5以上。©...