1.   And that issue has already caused some cracks in the relationship.

2.   As it is now, the crack was caused by freezing earth expanding and pushing the wall out a little.

3.   But the material can separate as it ages, causing cracks that may go undetected between tests.

4.   It never worked, because the hardened filler broke up when the ceiling moved, which caused the crack in the first place.

5.   Kelly said the cracks were caused by metal fatigue, meaning that the metal had been bent too often or too severely or both.

6.   Monroe said the theory was that the heat wave last week had dried the tree out and caused cracks in its base.

7.   Some baking experts advise avoiding inserting a knife into center as it could cause cracks.

8.   The Air Force said that it was unclear what was causing the cracks, and that a solution to the problem has not been developed.

9.   The cement expands at a different rate than the sand and gravel, causing cracks.

10.   The cracks are caused by the drain pipe being fitted too tightly.