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The Respiratory System
The Respiratory System

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evolution and some ecobabble
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Human Circulatory System

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... oxygen to cells and removes cell wastes. Describe how the kidneys and the liver are closely associated with the circulatory system as they perform the excretory function of removing waste from the blood. Recognize that kidneys remove nitrogenous wastes, and the liver removes many toxic compounds fro ...
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... Birds have a high demand for oxygen: • warm-blooded so metabolism is high • flight requires a lot of energy Additional challenge: • air at higher altitude is thinner  lower in O2 …yet some species have been seen flying over Mt Everest! Birds have a very efficient gas exchange system to cope with lo ...
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Evolution and Speciation powerpoint

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... There are three main types of COPD: asthma, emphysema, and chronic bronchitis. Asthma is a respiratory disease that involves airway swelling and mucus production. People with asthma usually have periods of wellness between episodes. Emphysema is another respiratory disease. With emphysema, the tiny ...
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Organisms at high altitude



Organisms can live at high altitude, either on land, or while flying. Decreased oxygen availability and decreased temperature make life at high altitude challenging. Despite these environmental conditions, many species have been successfully adapted at high altitudes. Animals have developed physiological adaptations to enhance oxygen uptake and delivery to tissues which can be used to sustain metabolism. The strategies used by animals to adapt to high altitude depend on their morphology and phylogeny.
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