Answer:
People have had the greatest impact on natural vegetation in areas with high population densities and intensive agriculture, such as South Asia, Southeast Asia, Europe, and parts of North and South America. In these regions, forests have been cleared for agriculture, grazing, and urbanization, and wetlands have been drained for cultivation. In addition, invasive species introduced by humans have disrupted natural ecosystems and displaced native plant species. Climate change is also having an impact on vegetation in many parts of the world, with rising temperatures and changing precipitation patterns altering the distribution of plant communities.