1. Management and conservation of the natural resource base, and the orientation of technological and institutional change in such a manner as to ensure the attainment of continued satisfaction of human needs for present and future generations. Such sustainable development conserves land and water, plant and animal genetic resources, is environmentally non-degrading, technologically appropriate, economically viable, and socially acceptable; 2. Development that meets the needs of the present generation without compromising the ability of future generations to meet their own needs.