Projects like disaster management and ecological balance are part of work education.

First, though, there's a little matter of the ecological balance.

What would happen to the delicate ecological balance, developed over millions of years?

This could pose danger to the local area's ecological balance.

Instead, they set about to destroy the continent's natural ecological balance.

Then, too, I trade for whatever is required to maintain a healthy ecological balance.

The increase in tourist activities, among other problems, continues to present a serious challenge to the park's ecological balance.

There was little effort at first to study how the ecological balance could shift through time as the result of evolution.

There also was the problem of establishing a new ecological balance.

Conservation of soil is done to maintain the ecological balance.