Answer:
Given the limits of natural resources, degradation of ecosystems, climate change, and growing human populations, a bright future for humanity is not guaranteed. The most promising future is one in which we learn to meet our needs in a truly sustainable fashion, minimizing waste, maximizing efficiencies, and meeting our needs in a way that does preclude future generations from doing the same.
Explanation:
Given the pace of environmental change, there is insufficient time to arrive at sustainable designs, materials, and processes by trial-and-error experimentation.
