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My work in the high-latitude North Pacific is mainly focused on learning the sequence of molluscan faunas that developed in response to climatic , tectonic and oceanographic changes during the Cenozoic . Most live in dark , moist places and are only collected by spoon-dropping after corn-starch dusting of their webs . This helps us to document the use of specimens as " vouchers " in the literature Accuracy and Limitation of Liability Although we make every attempt to provide reliable taxonomic , biological , distribution and ecological data , we cannot guarantee the absolute accuracy of these data . Financing should be limited by not offering terms ( including the financing of closing costs ) that result in an LTV equal to or greater than 100 percent . Loan asset sales / prepayment programs must be conducted in accordance with policies in this Circular and procedures in `` Managing Federal Receivables , '' including the prohibitions against the financing of prepayments by tax-exempt borrowing and sales with recourse except where specifically authorized by statute . Vendors ' invoices , bills , or statements of account may be used as basic vouchers , in place of the prescribed vouchers , in support of the agency 's accounts and accountability statements , provided they show all the information required in Title 7 of the GAO Policy and Procedures Manual for Guidance of Federal Agencies . Leakey Foundation gratefully acknowledges the generous support of Wells Fargo Bank , the series ' principal sponsor , as well as the Leakey Foundation Fellows and Abercrombie & Kent . A critical first step in understanding the evolution of snake venoms is to determine the sequence of the particular nucleotides forming the gene , a process that has begun only recently for snake venom proteins . The pressure is so great that just about any change that alters the amino acid sequence of the venom protein will be favored by natural selection .