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An Oxbow lake is essentially formed when a meandering river has its flow cut off by sediment deposition. The Outer bend of a river is where the velocity of the river flow is highest hence the bank is eroded ...

Sewage can contaminate water supplies which leads to waterborne diseases like typhoid or cholera. Agricultural run-off threatens water quality since pesticides have high levels of nitrate which causes eutrop...

The living components of an ecosystem consist of flora, fauna and bacteria, also known as biotic factors. Energy travels through the ecosystem through trophic layers. Trophic layer one consists of primary pr...

A depression is a huge area of low pressure that measures many 100s of km. Characteristics: ● Such low atmospheric pressure, often below 1000mb. ● Shown on a weather map by closed isobars with decreasing pre...

A number of river characteristics change as you travel downstream. Firstly, sediment size decreases due to erosion, which causes sediment to get finer and smoother. This happens due to hydraulic action, abra...