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Severe weather can occur under a variety of situations, but three characteristics are generally needed: a temperature or moisture boundary, moisture, and (in the event of severe, precipitation-based events) instability in the atmosphere.
Examples include: sunrise, weather, fog, thunder, ... natural phenomena have been observed by a series of countless events as a feature created by nature.
This is an alphabetical list of environmental issues, harmful aspects of human activity on the biophysical environment. They are loosely divided into causes, effects and mitigation, noting that effects are interconnected and can cause new effects.
List of sustainable agriculture topics; List of sustainable buildings in Australia; List of tallest smokestacks in Canada; List of threatened ecological communities of Western Australia; List of topics related to global warming; List of types of formally designated forests; List of U.S. states by carbon dioxide emissions
In probability theory, an event is a set of outcomes of an experiment (a subset of the sample space) to which a probability is assigned. [1] A single outcome may be an element of many different events, [2] and different events in an experiment are usually not equally likely, since they may include very different groups of outcomes. [3]
The following is a list of science topics used by WikiProject Science. Please feel free to add relevant topics to this list. Please feel free to add relevant topics to this list. Note that red links are essentially article creation requests.
Elementary events may occur with probabilities that are between zero and one (inclusively). In a discrete probability distribution whose sample space is finite, each elementary event is assigned a particular probability. In contrast, in a continuous distribution, individual elementary events must all have a probability of zero.
An experiment is a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried. Experiments provide insight into cause-and-effect by demonstrating what outcome occurs when a particular factor is manipulated.