We need to know more about factors that influence transmission rates and about the risks associated with different feeding alternatives at different ages in poor environments. (rehydrate.org)
Another problem facing large segments of the population relate to the problems inherent in data - poor environments with limited access to credit. (badcredit.org)
The team examined the chemical reactions that could lead to the formation of water within the oxygen - poor environment of early molecular clouds. (sciencedaily.com)