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Students in Tim Dwyer's biology class build model oxygen diffusion in sea spider legs using agar infused with a pH indicator to explore the relationship between diffusion rates, surface area, and volume. Friday Harbor, Washington.

Credit to Read: 
Photo by Timothy R. Dwyer (PolarTREC 2016), Courtesy of ARCUS
Photographer: Timothy R. Dwyer
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Image icon Download Dwyer_IMG_0070.jpg (1.43 MB)
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