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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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This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..

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Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..

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Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..

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Leaves

Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this ..

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While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..