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The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

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

Adaptation Tutorial
Adaptation Tutorial

Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..

Biological Energy
ATP & ADP – Biological Energy

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

Photosynthesis and respiration
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Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photop..

New Zealand Fauna
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Meet some of New Zealand's unique fauna, including endemic insects, frogs, reptiles, birds, and mammals, and investigate..