Several dolphin species have global distributions. The extent of their radiation and limits to gene flow are presumably a product of oceanographic features both recent and historical, behavioral specializations and social organization. Rough-toothed dolphins (Steno bredanensis) are globally distributed in tropical and subtropical waters and are generally found in depths...
In recent decades, there has been increased attention on human exposure to, and subsequently toxicity of, Polycyclic Aromatic Hydrocarbons (PAHs). PAHs are widespread organic pollutants and some have been shown to be toxic, carcinogenic and mutagenic. This research was focused on understanding the link between global PAH emissions and lung...
The purpose of this study was to determine the competencies necessary to conduct educational research in the
Venezuelan context; to determine if differences exist
among Venezuelan educators in responding to the questionnaire; to determine which clusters of skills and under
standings are relevant to an educational research master's
degree; to...
In the past 10 years we have witnessed the beginnings of the study of soil ecology as a unified science, and the general realization by soil scientists, farmers, and land managers that many of the most important economic aspects of soil health are controlled by biological factors. This research focuses...
This thesis reviews theoretical and local understandings of sustainability and examines the contributions which the NGO, the Toledo Institute for Development and Environment (TIDE), makes to achieving sustainability in the district of Toledo in Belize, Central America. The study focuses mainly on the Port Honduras Marine Reserve, which TIDE manages...
Chile has experienced great success in terms of economic growth in the last decades. This growing economy brings changes in the Chilean health care system. Its health care system was primarily funded by state sources until 1981, when a major reform was introduced that established new rules for the health...
This interpretive research sought to understand how eight Hispanic students who
mastered English as a Second Language (ESL) matriculated at a rural community college,
and what motivating factors encouraged or encumbered their academic persistence and
success. Particularly the study focused on student backgrounds, motivations, and
persistence factors influencing their success....