1.   Despite the agreement between the two countries, an element of uncertainty about the future remains.

2.   However, our uncertainty about the present average density of the universe is even greater.

3.   In addition, there is some uncertainty about how to calculate discounted future income for the representative household.

4.   Investors are jittery due to uncertainty about interest rates.

5.   Main reasons seem to be persistent low profitability among farmers and their uncertainty about the future.

6.   There are calls for the Prime Minister to bring to an end the uncertainty about the election date.

7.   There are uncertainties about adequate scale and revenue, and the consummation of ever-larger mergers.

8.   There is a great deal of uncertainty about the future of the company.

9.   There was a lot of uncertainty about whether or not the picture would be a success.