Chemical change
a process in which one or more substances are changed into one or more different substances.
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Physiological Homeostasis
Homeostasis is essential to maintain conditions within the tolerable limits. Otherwise, the body will fail to function properly. The body does this through feedback control mechanisms, e.g. blood sugar level regulation and temperature regulation. Read this tutorial to know more about the principles of negative feedback control employed by the body to sustain homeostasis...
Pollution in Freshwater Ecosystems
There are many environmental factors that arise due to the usage of water in one way or another and for every action that man does, there is a resultant effect on the ecosystem. In this tutorial, some scenarios where human action results in a response from the ecosystem, either physically or chemically, are described. ..
Homeostasis of Organism Water Regulation
Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the amount of water available for cells to absorb. Take a look at this tutorial to know how the body regulates blood sugar levels and temperature...
Community Patterns
Learn about community patterns and the ecological factors influencing these patterns. Revisit some of the ecosystems you've learned about earlier to learn more about the possible impacts of natural and human-induced environmental changes...