Massachusetts MCAS Biology Practice Test – Prep, Questions & Study Guide

Invasive species are defined as non-native species that, when introduced to a new environment, can disrupt local ecosystems. These species often thrive outside their original habitat, as they may face fewer natural predators, diseases, or competitors. This ability allows them to multiply rapidly and dominate local resources, which can lead to detrimental effects on native flora and fauna.

The disruption caused by invasive species can manifest in various ways, such as outcompeting native species for food and habitat, altering nutrient cycling, and even introducing new diseases. This ultimately reduces biodiversity and alters ecosystem functions, which can have a cascading effect on the environment and human activities. Understanding the impact of invasive species is crucial for conservation efforts and maintaining ecological balance.