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Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..

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Homeostasis is essential to maintain conditions within the tolerable limits. Otherwise, the body will fail to function p..

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

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Origins of Life on Earth

Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..

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Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..