Screening test

Human Neurology

Human Neurology deals essentially with the nervous system of humans. It also features the various theories put forward b..

Soils

Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..

Types and Causes of Brain Damage

This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..

Gene Action – Operon Hypothesis

Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..

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Plant Water Regulation

Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..

Seed Plants

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