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The term allelopathy from the Greek-derived compounds allilon-(αλλήλων) and -pathy (πάθη) (meaning "mutual harm" or "suffering"), was first used in 1937 by the Austrian professor Hans Molisch in the book Der Einfluss einer Pflanze auf die andere - Allelopathie (The Effect of Plants on Each Other - Allelopathy) published in German. [3]
A cascade effect is an inevitable and sometimes unforeseen chain of events due to an act affecting a system. [1] If there is a possibility that the cascade effect will have a negative impact on the system, it is possible to analyze the effects with a consequence / impact analysis .
They negatively affect multiple levels, ranging from molecules, to tissues, to organs; to individuals, to populations, and onto communities. In the natural environment, a combination of pesticide exposure and natural stressors such as fluctuating temperature, food shortages, or decreased oxygen availability are worse than when presented alone.
An adverse effect is an undesired harmful effect resulting from a medication or other intervention, such as surgery. [1] An adverse effect may be termed a " side effect ", when judged to be secondary to a main or therapeutic effect .
An erosion gully in Australia caused by rabbits, an unintended consequence of their introduction as game animals. In the social sciences, unintended consequences (sometimes unanticipated consequences or unforeseen consequences, more colloquially called knock-on effects) are outcomes of a purposeful action that are not intended or foreseen.
An example can be free public education offered by the government. [1] Students become smarter, gain knowledge and experience. This leads to more educated population, which can move out to the other countries. Negative Spillover. Negative spillover is the opposite of positive spillover, meaning unwanted social, political, and economic impacts.
A double negative is a construction occurring when two forms of grammatical negation are used in the same sentence. This is typically used to convey a different shade of meaning from a strictly positive sentence ("You're not unattractive" vs "You're attractive").
Kaplan initially defined ambivalence as total affect (the sum of positive and negative reactions) minus polarity (the absolute difference of positive and negative reactions). [3] For example, if objective ambivalence towards exercising was assessed using two separate 6-point scales, and a person indicated that his or her evaluation was slightly ...