James W. Dearing ([email protected]) is a professor in the Department of Communication at Michigan State University, in East Lansing. Jeffrey G. Cox is a research associate in the Department of ...

E. Andrew Balas ([email protected]) is a professor in the College of Allied Health Sciences at Augusta University, in Georgia. Wendy W. Chapman is chair of and a professor in the Department of ...

Diffusion is the movement of particles from a region where they are in high concentration to a region where they are in low concentration, and is one of the ways substances can move across the cell ...

Particles - molecules or ions - in a liquid and a gas are constantly moving randomly. Because of this movement, particles will spread themselves evenly throughout. Diffusion is one of the processes ...

From asthma to chronic obstructive pulmonary disease (COPD), there are a variety of conditions that can affect the lungs. Wheezing or general shortness of breath may be signs that the lungs aren’t ...