And although the hefty, largely interred stones were challenging to remove, landowners still occasionally uprooted them.
"There is a real jumble of bones in there, but it's been challenging to remove them because they come from a bone bed that is about half a metre thick and goes into the hillside," said Steve Brusatte, who led the study.
There are some invisible (to the naked eye) parasites (giardia and toxoplasmosis) that can infect humans (zoonotic disease), which are challenging to remove.
In addition to a staffing review, all contracts would need to be challenged to remove any discretionary costs and offices considered for sale or sublet".
From December 15, 2005 to June 15 , 2006 the watermarking community was challenged to remove the watermark from 3 different 512×512 watermarked images while maximizing the peak signal-to-noise ratio (PSNR) measured by comparing the watermarked signals with their attacked counterparts.
7 Polyps that cross two haustral folds and polyps behind a fold or that have a 'clamshell' distribution around a fold are recognised as challenging to remove endoscopically.
In the second half of the school year, scaffolding supports such as model lesson plans are removed (fading) and teachers are challenged to use STeLLA strategies and tools to plan and teach lessons in a new content area.
"What you would be doing is challenging or removing authority of many different state regulators".
