For example, with regard to intergenerational living arrangements, a phenomenon of great concern in recent years has been elderly parents living with their adult children, showing that the traditional form of stem family is in decline.
Place-based learning has been shown to increase pro-environmental behavior (Scannell and Gifford 2010), to provide a strong predictor of efforts to improve environmental quality (Johnson et al. 2012), and to represent a potentially important tool for promoting acceptance of climate change as a phenomenon of critical concern (Borick and Rabe 2010; Brownlee et al. 2013).
Problem alcohol use is an ongoing, worldwide phenomenon of considerable concern.
The number of new psychoactive substances (NPS) advertised for sale online is constantly increasing and it has become a phenomenon of global concern.
At the population level, inbreeding depression can slow population growth and increase extinction risk [ 8- 10], particularly in small and fragmented populations [ 11, 12], making it a phenomenon of particular concern to conservation biology [ 13].
The damaging phenomenon becomes a matter of concern only when it entails a certain degree of damage or loss to the population or the resources within its influence.
In real organisms, wherein the influences of particular genes are interconnected with those of many other genes in all regions of the genome, the phenomenon of frequency dependence concerns much more, possibly even all, genes.
One phenomenon of bacterial evolution concerns a process known as horizontal gene transfer (HGT), where bacteria transfer genetic material to related or to unrelated bacterial lineages (Doolittle 1999; Doolittle et al. 2003).
Funk et al. [ 17], linked this phenomenon to concerns about the legitimacy of needs, not wanting to bother formal providers, negative perceptions about and previous experiences with formal services, and a desire to keep the focus of care on the patient.
