Sentence examples for difficulty tree from inspiring English sources
But tree reading and tree building represent tasks of varying levels of difficulty; tree building is more conceptually difficult and builds upon tree reading skills.
Still, difficulties with tree construction extend beyond technical aspects to the foundational basis of what trees represent.
A growing number of studies discuss students' difficulties with tree thinking and classification (Baum et al. 2005; Gregory 2008; Meir et al. 2007; Novick and Catley, 2006).
We faced here two major difficulties for tree inference.
"Microraptor was an adept glider and would have had little difficulty gliding from tree trunk to tree trunk," the authors report today online in the Proceedings of the National Academy of Sciences.
Detecting forest patterns in the study area is complicated by 1) a lack of obvious environmental gradients with exception of a few rivers and dunes and 2) the difficulty to distinguish tree communities with small datasets (<200 plots) (Childes and Walker 1987; Strohbach 2013; De Cauwer 2013).
Lack of statistical robustness is a classical difficulty when inferring tree with short sequences, and this is particularly true of homeodomain sequences (only 60 amino-acids).
Unlike Sartre, he had no difficulty with things, trees, the Empire State Building, the impersonal ocean.
As he complained about the pressures and difficulties surrounding the tree, this large, balding man in his 40's seemed not like a twinkly Santa's helper but like a harried Broadway producer dealing with a combustible leading lady.
Our results show that undergraduate biology students have difficulty constructing phylogenetic trees to express evolutionary relationships.
Perhaps it is not surprising that the stronger-biology-background students in Study 1 had difficulty with our tree-thinking questions given that high school and college instruction on evolution focuses primarily on microevolution (e.g., natural selection) rather than macroevolution (Catley 2006).
