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The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..

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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..

Pikas are an indicator species for climate change
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Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..

Chromosomes X and Y and Sex Determination
Chromosomes X and Y and Sex Determination

This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..

Biological Energy
Biological Energy – ADP & ATP

ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..

Early Earth
The Origins of Life

This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..