Q 19.1 2. Even though the rate of human population growth is decreasing, human impacts on our planet are increasing. Why? 4. Sustainability implies equitable treatment and justice among humans. How can we ensure that efforts to reduce ecological footprints in different countries are equitable and just?19.2 1. What environmental challenge matters most to you? Explain how systems thinking is important to meeting that challenge. 2. Describe three changes in your own activities that you could make today that would diminish your ecological footprint. 19.3 1. What core values are most important to your goals for environmental sustainability and your choice of actions to achieve those goals?