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THE SKIN B&S CHAPTER 6. Purpose of the skin Its the largest organ in the body Used for protection against drying (dehydration) and pathogens Regulates.
Respiratory System. Parts Lungs Air passages Functions Takes in oxygen Removes carbon dioxide Body has 4-6 minute supply of oxygen.
CHAPTER 22 Respiration: The Exchange of Gases MECHANISMS OF GAS EXCHANGE Gas exchange is the interchange of O 2 and CO 2 between an organism and its.
1 2 All About Energy 3 Formulas 4 Photosystems.
