Concept:Environmental balance is a stable state where species and ecosystems remain relatively unchanged. It can be disrupted by sudden events or long-term human activities.Explanation:Natural balance is maintained when species numbers and interactions stay stable. Disturbances like natural disasters or human actions can break this balance. Continuous deforestation and soil erosion destroy habitats, kill wildlife, and prevent natural recovery. This leads to long-term ecological damage. Other options like banning wildlife killing or preserving habitats help maintain balance, not disturb it. Only unchecked deforestation and soil erosion cause persistent disturbance.Answer:Option D: deforestation and soil erosion continue.