QCAA Geography EA Revision Practice Test

The term that describes an increase in the birthrate that negatively impacts population sustainability is population explosion. This phenomenon occurs when the number of births significantly exceeds the number of deaths within a population over a certain period, leading to rapid population growth.

Population explosion often results in various challenges related to sustainability, such as strains on resources, inadequate infrastructure, and environmental degradation. When a population grows too quickly, it can outpace the capacity for food production, healthcare, and education, making it difficult for the society to maintain a quality of life for its inhabitants.

Understanding this term is crucial in discussions surrounding demographics, resource management, and environmental issues, as well as in planning for future developments and policies aimed at ensuring sustainable population levels. This contrasts with the other terms, which either do not refer to a growth phenomenon leading to sustainability issues or describe different demographic situations entirely.