Things such as nostril size vary with temperature and humidity in ways that suggest evolution is at work.
Accepted design loadings in the United States vary with the latitude.
His advice to Purdue: Look for evidence that the changes in radioactive decay on Earth vary with the rotation of the sun.
But where the boundaries between danger, potential damage and safety lie, and how they vary with the type and number of ash particles, was not taken into account in the decisions to close airspace.
There are many situations where problems arise between people because conversational styles vary with ethnic, regional, age, class and gender differences.
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