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When the muscles contract , the arch flattens and air is drawn in and at the limit of contraction a valve slides across the pneumostome . c. Direct loans usually offer borrowers lower interest rates and longer maturities than loans available from private financial sources , even those with a Federal guarantee . Their broad arrangement of spinnerets facilitates sheet spinning.Two genera with 30 species are recorded from the Afrotropical Region and , despite many recent descriptive papers , no comprehensive treatment of the Afrotropical species has been published . In addition to learning scientific methodology and marine biology concepts , students gain an appreciation for and sense of stewardship toward their local marine environment . The light sensitive area of the skin is especially the anterior part of the body at the edge of the shell . At a joint meeting on April 17 , 1997 , we received oral comments from those agencies . The heart of the pulmonate may slow down from 36 beats per minute to only three or four . As an indication of how much body processes are slowed down , a hibernating pulmonate at 30oF will use as little as 1/50 th the amount of oxygen used by an active snail at 59oF . My project , supported by the National Science Foundation , has two parts : a general survey of the amphibians and reptiles , and a training program aimed at providing Burmese biologists with the necessary skills for conducting their own biodiversity surveys . I am currently working with several colleagues to develop a consortium of conservation NGOs interested in Myanmar ’ s environmental conservation , and to advance graduate science education through Myanmar ’ s university system , where I am advising several Ph. D. students . Look at the mouth-parts of a grazing snail through a lens and you can see how it presses its mouth against the glass pane , opens its lips , and lets the radula glide over the algal film . Scientists who study climate history have used our age for Bering Strait 's opening , and our age for the flow reversal through the strait , to fine-tune their supercomputer models of Northern Hemisphere climatic and oceanographic history . As blood continues to leak out through perforated vessels , the blood pressure drops precipitously . Galen received his undergraduate degree from Humboldt State University ( California ) and after receiving his Ph.D. in zoology from the University of Nairobi in Kenya in 1976 he completed a postdoctoral fellowship at the Smithsonian Institution 's National Zoological Park . Ancient gilded pagodas sprinkle the landscape ; the enormous Ayeyarwady River cuts through the middle of the country , unconstrained by dams and levees ; jungle-clad mountains form a continuous , horseshoe-shaped barrier around the country , isolating it from neighboring India , China , and Thailand .