The part of the earth’s surface covered with water (such as a river or lake or ocean); they invaded our territorial waters; ”they were sitting by the waters edge.
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Freshwater Communities & Lentic Waters
Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The size and depth of a still body of water are major factors in determining the characteristics of that ecosystem. Learn in this elaborate tutorial how life thrives in and influenced by a still-water habitat...
Abiotic Factors – Water Conditions
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 prime factor responsible for water disturbance. Such disturbance can affect the distribution of organisms in the habitat. This tutorial looks at how these abiotic factors affect the way in which organisms operate in the freshwater ecosystem...
Chemical Composition of the Body
The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial will help you understand the chemical composition of the body. This will come in handy when considering the various interactions between cells and structures. ..
Running Water Freshwater Communities
This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible species occupying the area. Read to know more...
Regulation of Organic Metabolism, Growth and Energy Balance
The human body is capable of regulating growth and energy balance through various feedback mechanisms. Get to know the events of absorptive and post-absorptive states. This tutorial also describes the endocrine and neural control of compounds such as insulin and glucagon. It also deals with the regulation of growth, heat loss, and heat gain. ..
Animal Water Regulation
Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understand how animals adapt to their habitat. For instance, how animals thrive in aquatic habitat and are able to overcome osmosis. It also sheds light on the reasons animals adapt...