Factors such as time of season, soil quality and other environmental variables all contribute to the nutrient content of foods. (naturalchoiceswellness.com)
Their results indicate that exchange rates are variable within and among different sized ponds and were not well predicted from environmental variables such as wind, rainfall, and temperature. (sciencedaily.com)
To assess how facial colors are related to physical environments, the researchers analyzed environmental variables such as geographic location, canopy density, rainfall and temperature. (sciencedaily.com)