1. in the image of the fish gills to the far right, why do the values for oxygen concentration increase along the arrow labeled A 2. in the image of the fish gills to the far right, why do the values for oxygen concentration decrease along the arrow labeled B

3. How are gills similar to lungs based on the information provided in the diagram

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well schools are being forced to embrace computers. unlike their "digital immigrant" teachers, these students are "digital natives", born into a world where technology is an integral part of everyday life. almost every student has access to a multitude of computers, laptops and tablet devices. it would be crazy to assume an assignment would  not be written on computer in this day and age.

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