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For example , studies in Kenya suggest there is an interaction between nutritional status and parity on lactation performance [ 5 ] . Stone tools made in Kenya almost 2.5 million years ago reveal that the first toolmakers in the archaeological record had a hitherto unrecognized degree of technical skill - but there is no indication of whether the toolmakers were human . Studying the cycle of nutrients in a pristine natural environment in Kenya helped me to interpret processes in perturbed ecosystems once I came back to Europe . The abolition of primary school fees in Kenya helped an additional 1.5 million children into a classroom , and in Zambia , increased girls ’ enrolment from around two thirds to over 80 % in just two years . Investigating the Impact of Tourism in Kenya 2000-09-29 Prolific wildlife and white-sand beaches bring about 780,000 foreign visitors to Kenya annually .