Stuffed Animals. Thereâs TONS of stuffed Disney animals and friends on eBay. One of the most expensive is this Genie doll, which is listed for $1,000. I know I have some of these somewhere, but mine are definitely more, ah, âwell-lovedâ than this one.
1 spongy mesophyll The plant tissue in a leaf which has loosely packed cells and air spaces between them to allow gas exchange. 2  stomata Tiny holes in the epidermis (skin) of a leaf-usually on the undersides of leaves. 3  They control water loss and gas exchange by opening and closing.
Gas exchange is the process by which oxygen and carbon dioxide (the respiratory gases) move in opposite directions across an organism's respiratory membranes, between the air or water of the external environment and the body fluids of the internal environment.he surface area for gas exchange is correlated with metabolic rate. Endotherms, such as birds and mammals, have a high metabolic rate and a correspondingly high respiratory surface area. Birds have one-way flow through their lungs, enabled by a complex system of air-storing sacs.