Astomia

Astomia congenital absence of a mouth. Origin: g. A-priv. – stoma, mouth..

Meiosis is a form of cell division that creates gametes. It is comprised of two divisions that in the end, the resulting..

Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..

Life, as we know it today, is presumed to have started in the sea and many of them were likely eukaryotic animal-like or..

With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..

Find out more about New Zealand's unique biodiversity by exploring a range of different ecosystems and the key role of s..

This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..

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