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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when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

c. heat from the poles back down towards the equator.

links? do you have a link? i don't see anything?