"The butterfly effect is the idea that small, seemingly trivial events may ultimately result in something with much larger consequences – in other words, they have non-linear impacts on very complex systems."
https://science.howstuffworks.com/math-concepts/butterfly-effect.htm
"The “ripple effect” is an abstract metaphor to describe how our actions (or non-actions) reverberate throughout the physical and social world. It is a common metaphor in social science literature, however it has never been properly defined and expounded as a useful concept beyond the turn of phrase."
https://medium.com/the-abs-tract-organization/the-ripple-effect-8c8495d46554
"The principle of cause and effect is evident in the universe and manifests itself in our daily lives.
All actions have a reaction, whether good or bad.
Cause is the reason or action that produces results. Effect is the result of an action or cause. You can't have one without the other."
https://www.the-sun.com/lifestyle/3913659/law-of-cause-and-effect/