But dates aside, Witts' catalogue of over 6,000 fossils shows no hint of increasing environmental stress before the extinction, despite an episode of climate warming that lasted over a million years, before cooling at the end of the Cretaceous.
In addition, migrant and twin studies have hinted of an environmental component that can possibly overwrite the genetic influences on breast cancer, suggesting a multi-factorial nature of breast cancer risk or gene-environment interactions [ 18, 19].
Our findings provide the first hint of a serious environmental and public health threat that could negatively impact marine wildlife and humans.
Similarly, measurement of cytokines, chemokines, and other plasma proteins could provide us a hint on the class of environmental exposures [ 27].
This hints at the presence of environmental gradients within aggregations that may cause small-scale spatial heterogeneity.
These family-related risk factors may provide useful hints about the nature of environmental and genetic risk factors for schizophrenia [ 1].
These characteristics hint at the possible role of environmental changes (building of a dam several years ago) in the expansion of BU in this area.
The authors wish to thank Dr. Joanna Kobyłecka for her helpful discussion and useful hints related to chemical analysis of environmental samples.
Phylogenetic analyses of environmental sequences also hinted at the existence of previously unobserved archaea [ 16– 18] and eukaryotic lineages [ 19– 22].
Measurements of body size are nevertheless crude measurements of environmental conditions early in life, and any association may give a hint of a biologically significant relationship.
