URGENT!Comparison of the adaptations insects have (spiracles and the tracheal system) with adaptations fish have ( Gills, countercurrent flow and ventilation) and adaptations mammals have (Lungs and breathing) to successfully carry out gas exchange within its life style
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FISH
Fish also have an efficient transport system within the lamellae which maintains the concentration gradient across the lamellae.
The arrangement of water flowing past the gills in the opposite direction to the blood (called counter current flow) means that they can extract oxygen at 3 times the rate a human can.
Humans
Gas Exchange in Humans. The gas exchange surface of amammal is the alveolus. There are numerous alveoli - air sacs, supplied with gases via a system of tubes (trachea, splitting into two bronchi - one for each lung - and numerous bronchioles) connected to the outside by the mouth and nose.
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