range
The set of conditions throughout which an organism (for example, plant species) naturally occurs.
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Sensory Systems
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal and external environment, neural pathways that conduct this information to the brain and parts of the brain that processes this information. Know the different sensory systems of the human body as elaborated by this tutorial...
The Evolution of Cell Organelles
The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell", came about. This tutorial speaks of the evolution of organelles, their diversity, and similarity...
Temperature Regulation in Animals
This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperature within the homeostatic range...
Regulation of Biological Systems
Regulation of Biological Systems tutorials are focused on the modulation of biological systems from cell to population levels. The course starts with the principles of negative feedback control, and how it regulates blood sugar, water, and temperature in humans. It, then, culminates in the population regulation and ecosystem succession. Learn the various regulatory mechanisms that..
Freshwater Lentic Communities & Animals
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a community of hydrophytes providing a substrate for algae. In return, the algae prevent excessive herbivory of hydrophytes by serving as food to the herbivores. Know more details here...
New Zealand’s Biodiversity
Find out more about New Zealand's unique biodiversity by exploring a range of different ecosystems and the key role of some endemic species in these ecosystems...