Even though they had the ability to evolve and survive for several hundreds of years, amphibians are slowly losing their race to global changes in the environment. Evolution is constraining several species into decline, and possibly even extinction. Scientists have estimated that the rate of plant and animal extinction is greater now than any known in the last 100,000 years. Because amphibians have such a complex life cycle they face more challenges to changes in the environment. For example, they have permeable skin, live on both land and water, and their eggs have no shells. According to scientists, natural selection and species adaptation may, in time, allow amphibians to react to and recover from the new environmental threats. Overall, amphibians are more vulnerable than any other species of life during such drastic changes in our environment.
To read more on these amphibians: http://www.sciencedaily.com/releases/2007/05/070501075044.htm
No comments:
Post a Comment