Polymorphism allows a function or operator to perform different tasks depending on the types of the arguments or operands. Polymorphism is the use of a single symbol to represent many different kinds, or the provision of a single interface to entities of different types, in programming language theory and type theory.
The idea is to operator derived from a biological theory that states that an organism or species can go through a variety of shapes or stages. The 1960s saw a substantial increase in interest in polymorphic type systems, and by the end of the decade, actual implementations were starting to surface.
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Answer:
It is a process by which greenhouse gases allow the sun’s light to penetrate the atmosphere but stop the heat from escaping.
Explanation:
a green house is a house made purely of glass a transparent material within which the conditions for plant growth such as temperature and humidity can be controlled. this when the temperature is set to a particular degree it remains same untill regulated as there's no where for heat to escape.
the green house effect therefore implies the fact that gases are forming a barrier around the earth that prevents the heat from the sun and other sources from escaping. A similar effect in a green house.
Mountains were a barrier for settlers travelling in North America
Adolescent egocentrism is a term that David Elkind used to describe the phenomenon of adolescents' inability to distinguish between their perception of what others think about them and what people actually think in reality.[1] David Elkind's theory on adolescent egocentrism is drawn from Piaget's theory on cognitive developmental stages, which argues that formal operations enable adolescents to construct imaginary situations and abstract thinking.[2]
Accordingly, adolescents are able to conceptualize their own thoughts and conceive of other people's thoughts.[1] However, Elkind pointed out that adolescents tend to focus mostly on their own perceptions – especially on their behaviors and appearance – because of the "physiological metamorphosis" they experience during this period. This leads to adolescents' belief that other people are as attentive to their behaviors and appearance as they are of themselves.[1] According to Elkind, adolescent egocentrism results in two consequential mental constructions, namely imaginary audience and personal fable.
