1.   Certain key variables highlighted by Grant and Wallace correspond to those factors considered especially crucial by the flashpoints model.

2.   One other key variable that has traditionally been used to delineate rural areas is the percentages employed in agriculture and forestry.

3.   The original proposal documents from the firms offer key accounting variables.

4.   The problem is the difficulty of selecting the key variables and then analysing the relationships between them.

5.   Key variables that were considered to affect the rate of desertification were soil status, vulnerability of land to desertification, and human and animal population pressures.

6.   An important element of this is to have all key variables in the manufacture of these raw materials under process control.

7.   Attendance is the key variable in why the Chiefs have vaulted to the upper echelon of sports franchises and why the Royals are skimming near the bottom.

8.   Besides mortgage terms, another key variable in housing expenses is local taxes.

9.   Borrowing costs are a key variable for the health of the housing industry.

10.   A key variable for the housing industry is the level of borrowing costs, and mortgage rates have increased by more than half a percentage point since mid-February.