Amphibian means “double life” in reference to the fact that most adult amphibians live on land while embryos need water to survive. Some amphibians have existed since the Jurassic age; however the number of these long-lived animals is decreasing throughout the world (Amphibians). In 2010, 32% of the world's 6600 amphibian species were at risk of extinction (Hayes, Falso, Gallipeau, Stice 2010). There is no single cause of amphibian decline, but it appears that habitat loss, such as deforestation, is the main reason along with human impact in terms of urbanisation, forest fragmentation, predation, human exploitation, pathogens and change climate (Hayes, Falso, Gallipeau, Stice 2010). The climate is depleting amphibians due to rising temperatures, decreasing rainfall, higher levels of UV radiation and increased pesticides. The declining population rate is also a factor; there is more mortality and reduced birth rates among amphibians. The decline of amphibian populations was considered a global phenomenon in the early 1990s, and some experts consider this decline to be Earth's sixth mass extinction (Hayes, Falso, Gallipeau, Stice 2010). One way to gather information on amphibian declines has been done by the Global Amphibian Assessment or GAA. The GAA was the first global assessment of the conservation status of amphibians and takes into account the 5,743 known species in the world, according to the GAA (AmphibiaTree). The GAA findings are posted for public disclosure on the Amphibian Specialty Group (Animal Specialty Group) website. There is an assessment of amphibian decline, including Red List threat, regions and ranges of some amphibians, and general ecology information (AmphibiaTree). The GAA stated that… half of the document… 2003. The effects of adjacent land use on wetland amphibian species richness and community composition. Canadian Journal of Fisheries & Aquatic Sciences,[cited November 30, 2011] 60(9), 1078-1094.Forman RTT, Alexander LE. 1998. Roads and their main ecological effects. Annual Revies, [cited December 2, 2011](29), 207-231. Available from: doi: 10.1146/annurev.ecolsys.29.1.207Leydig TF. 1992. Human impacts on genetic diversity in forest ecosystems. Oikos,[cit. December 1, 2011] (63), 87-108. Available at: http://www.fs.fed.us/psw/publications/ledig/captured/psw_1992_ledig037.pdfHayes TB, Case P, Chui S, Duc C, Haeffele C, Haston K, Tsui M. 2006. Pesticide Mixtures , Endocrine disruption and amphibian decline: are we underestimating the impact? Environmental Health Perspectives, [cited December 2, 2011] 11440-50. Available from: doi:10.1289/ehp.8051