Faced with corporate and governmental clients who saw little financial benefit in investing in sustainable design, American architects often ignored ecological questions.

The President said the program would continue as long as "absolute priority was given to the environmental and ecological question."

The landfill raised many ecological questions for years as only in the 2000s some of the major problems concerning waste managing began to solve.

Molecular ecology engendered a new research paradigm for investigating ecological questions considered otherwise intractable.

Growth of the industry in recent years raised a number of ecological questions.

You're also going to get (on average) a better paper, in the sense of it tackling an important ecological question.

The ecological questions are extraordinarily complex, and research into them will take years.

While this raised ecological questions, he added it's great the fish are present for children learning to fish.

Thus it acts as an exact metaphor for the necessity of a broad perspective in addressing any ecological question.

However, there are social and ecological questions to be asked about this.