Sentence examples for variations have contributed from inspiring English sources

While we cannot rule out the possibility that natural variations in the Earth's climate (via naturally occurring cloud variations) have contributed to global dimming, the effects are so closely correlated to trends in atmospheric pollution that there is strong evidence to say human activity is a major player.

Climatic and tectonic variations have contributed to the geomorphic diversity across the flood plain (Sinha et al. 2005).

Insufficient collections and incomplete descriptions of variation have contributed to slow progress in tree fern taxonomy.

In the northern Line Islands the combined effects of local human impacts (predominantly fishing), global human impacts (global warming), and natural oceanographic variation have contributed to the observed patterns.

The authors provide rich detail of molecular variation within and between populations of these species and describe how patterns of population genetic variation have contributed to our understanding of the evolution of virulence and virulence factors in these pathogens.

It is difficult to quantify how much rate variation has contributed to the difference between mammals and non-mammals.

We observed that structural variation has contributed to genetic differentiation among current domesticated chicken breeds and the Red Jungle Fowl.

In addition, our data suggest that structural variation has contributed to genetic differentiation among current domesticated chicken breeds and the Red Jungle Fowl, and might have played a role in chicken genome evolution.

Taken together, these findings are consistent with the observation that chimpanzees in Cameroon and Nigeria may be adapted to their local evironments, and that this variation has contributed to the genetic differentiation of chimpanzee subspecies.

The extent to which inadvertent selection of epiallelic variation has contributed to the major increases in crop yield or quality achieved through selective breeding over the past century remains a mystery.

Therefore, a scalar (c) was included to allow for environmental between-population variance, whereby small values of c (e.g., close to 0) indicate that the phenotypic variation is mostly influenced by environmental effects, and large values of c (e.g., close to 1) indicate that only genetic variation has contributed to phenotypic differences.