1.   During winter the lake became a solid block of ice.

2.   The hard shale was now gone and the flat lake had become a choppy sea of sand and rock.

3.   But the lake became the constant of the trip.

4.   Lake became a forceful advocate for a more determined response in Haiti and later in Bosnia.

5.   Later studies documented the cascade of ecosystem destruction that occurs as a lake becomes progressively more acidic.

6.   Officials expected the lake to become a dead zone.

7.   When the lake becomes icebound, heavy snow squalls that can rage along the southern shores dwindle in number and intensity.

8.   When does a merely good lake become great?

9.   With less rainfall, lakes became more saline, and the changed conditions caused diatoms that thrive on saltier water to increase, while freshwater plants declined.

10.   Previously remote, the lake became accessible by train, causing a population buildup.