11.   The snail darter became the standard-bearer for the entire ecosystem of the Little Tennessee River.

12.   This has alarming implications for the entire Yellowstone ecosystem because lake trout can eradicate or drastically reduce the population of cutthroat in the lake.

13.   We have taken this entire ecosystem for granted.

14.   A frustrated Canadian government passed legislation giving itself the power to enforce conservation of the entire Grand Banks ecosystem.

15.   Best, a physician who is president of the Australasian Faculty of Public Health Medicine, said the entire ecosystem of the Pacific was at risk.