Sentences with phrase «isolated populations facing»
It happens over generations as later generations stay in many ways quite similar but in certain respects become rather different from earlier generations, especially in small, isolated populations facing novel selection pressures.
http://religion.blogs.cnn.com/ Not exact matches
Lindqvist says that the analysis reveals that polar bear DNA has lost diversity as populations have dwindled, drifted apart and become genetically isolated, suggesting today's bears have less resilience to the environmental change, habitat loss, pollution and diseases they now face.
As a rural school in Murphy, North Carolina — in Southern Appalachia — we have become acutely aware of the challenges facing our student population: They live in a historically isolated community with little access to cutting - edge, well - paid jobs.
Hawaii is the most isolated population center on the face of the earth.
Hawaii is the most isolated population center on the face of the earth.