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A trophic cascade is an example of a positive feedback loop in nature. Basically, the presence of an apex predator within the landscape changes the behaviour of prey animals, which in turn increases the complexity and diversity of the biome.What are some examples of positive feedback loops?
Scientists are aware of a number of positive feedbacks loops in the climate system. One example is melting ice. Because ice is light-coloured and reflective, a large proportion of the sunlight that hits it is bounced back to space, which limits the amount of warming it causes.What are some examples of positive feedback mechanisms?
Examples of positive feedback mechanisms are. One example of a biological positive feedback loop is the onset of contraction in childbirth. When a contraction occurs, the hormone oxytocin is released into the body, which stimulates further contractions.Is this a negative or positive feedback loop?
negative feedback loops, in which a change in a given direction causes change in the opposite direction.For example, an increase in the concentration of a substance causes feedback that ultimately causes the concentration of the substance to decrease. Positive feedback loops are inherently unstable systems.