As species of the fish age and develop, they explore new territories and expand their ecological limits through migration.

On the other hand, Professor Herman Daly suggests that it is not actually an economic crisis, but rather a crisis of overgrowth beyond sustainable ecological limits.

Sustainable agriculture seeks to assure a continued supply of food within the ecological, economic and social limits required to sustain production in the long term.

Prosperity consists in our ability to flourish as human beings - within the ecological limits of a finite planet.

These tools aim at bringing ecological limits to the center of decision-making.

The objective is to establish it at a sustainable scale that does not exceed ecological limits.

To maintain the country's comparative advantage in forest products, Finnish authorities moved to raise lumber output toward the country's ecological limits.

Humankind lived near its ecological limit and tribe fought tribe for living space.

An advanced civilization pushing its ecological limits would, almost by definition, not waste both matter and energy.

We know that competing replicators tend to expand toward their ecological limits, and that resources are nonetheless wasted throughout the universe.