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Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...

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This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..

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

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

Genetics – Lesson Outline & Worksheets
Genetics – Lesson Outline & Worksheets

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Early Mammals on Earth

The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..