In biology, a cause-and-effect relationship refers to the link between one event (the cause) and another event (the effect) that follows as a result. For example, a change in temperature (cause) may lead to alterations in animal behavior (effect). Understanding these relationships helps scientists comprehend how various factors influence biological processes. This concept is essential in the study of ecosystems, evolutionary patterns, and physiology, as it allows researchers to predict outcomes from specific actions or conditions.