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Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..
The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..
Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..
Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..
The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..