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The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..

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The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..

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New Zealand is known for its unique biodiversity, caused by its remarkable geography and geologic history. Breaking away..

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Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..

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The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

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Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..