Astomia

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

A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..

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

The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the ..

This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..

Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..

A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..

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