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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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If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..

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Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..

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Independent Assortment and Crossing Over

This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..

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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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Growth and Development of a Human Baby

Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..