Tobacco dependency and adolescents: a good time to give up smoking?
The consumption of tobacco among adolescents is related to family function and having friends who smoke. The low dependency and the motivation to change make this stage of life a good moment to concentrate on anti-smoking counselling.
Diversification of P. integrifolia ssp. depauperata possibly occurred as a consequence of the marine transgression/regression cycles during the Pleistocene. In periods of high sea level, plants were most likely restricted to a refuge area corresponding to fossil dunes and granitic hills, from which they colonized the coast once the sea level came down. The modern pattern of lineage geographical distribution and population variation was established by a range expansion with serial founder effects conditioned on soil availability.