1.   Testing needs to be done to determine the long-term effects on humans.

2.   Unfortunately, no systematic research has been done to determine the typical voice settings of speakers of Caribbean Creoles or of members of the Caribbean community in Britain.

3.   Although birds have well-developed olfactory organs, relatively few studies have been done to determine how they use the sense of smell, if at all.

4.   And though one genetic variation predominates, more work must be done to determine which mutations are involved in hair color and susceptibility to ultraviolet radiation.

5.   Additional testing has to be done to determine the size of the reserves, she said.

6.   Cliff Rothenstein, who oversees the EPA storage tank office just outside Washington, says more studies must be done to determine the best solutions.

7.   Engineering studies must be done to determine whether Texas Stadium can accommodate the renovations, Stopfer said.

8.   He said bacteria was also found in the spleens of some salmon and further tests are being done to determine what it is.

9.   It was done to determine whether the difference in death rates of newborns could be attributed entirely to the greater poverty and illness of patients at public hospitals.

10.   Lab experiments are done to determine the potential benefit or risk of a substance.