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New Zealand’s Unique Flora

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The Water Cycle

The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

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Biological Viruses

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

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Human Reproduction and Fertilization

For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to con..

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Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..